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  1. #1
    Active Member USAF's Avatar
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    Default Is removing 1330 Water pump simple? How to drain/bleed coolant?

    Hello, I am working on a friends 2021 Spyder RT Limited that is leaking coolant from the water pump housing. Looks to be coming from between the pump housing gasket. I know my way around motorcycles very well but have never removed a water pump on one of these. Before I proceed, I have a few questions.

    Is this just a straightforward job or are there other parts that are going to also come out with the pump.

    Also where is the drainage valve / and what is the bleeding procedure.

    Thanks for your help !
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    Last edited by Peter Aawen; 07-04-2023 at 02:41 PM. Reason: Expanded title to briefly ask the question/s... ;-)

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    Very Active Member BLUEKNIGHT911's Avatar
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    Quote Originally Posted by USAF View Post
    Hello, I am working on a friends 2021 Spyder RT Limited that is leaking coolant from the water pump housing. Looks to be coming from between the pump housing to motor gasket. I know my way around motorcycles very well but have never removed a water pump on one of these. Before I proceed, I have a few questions.

    Is this just a straightforward job or are there other parts that are going to also come out with the pump.

    Also where is the drainage valve / and what is the bleeding procedure.

    Thanks for your help !
    If your thinking of Draining the radiator , pull the hose off ..... many folks have discovered the OEM drain often breaks off. ..... No warranty ?????? ...... Mike

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    Very Active Member Snowbelt Spyder's Avatar
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    Quote Originally Posted by USAF View Post
    Hello, I am working on a friends 2021 Spyder RT Limited that is leaking coolant from the water pump housing. Looks to be coming from between the pump housing gasket. I know my way around motorcycles very well but have never removed a water pump on one of these. Before I proceed, I have a few questions.

    Is this just a straightforward job or are there other parts that are going to also come out with the pump.

    Also where is the drainage valve / and what is the bleeding procedure.

    Thanks for your help !
    Why is this not being handled under warranty?


    Doug

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    Smile

    Step 1 -- review how important this friendship is to you. This is a 7 on a scale of 10 difficulty.

    Step 2 -- buy a service manual and read the relevant parts. The pump is integrated with the thermostat and has many plastic parts then need proper torque.

    Step 3 -- carefully and repeatedly loosen 1/4 turn then tighten the various pump-to-engine fasteners. Then cross your fingers or whatever.

    It's my theory 1330cc water pumps have problems when the engine is revved over 4K before the 1st or 2nd bar shows on the instrument panel.
    Last edited by BertRemington; 07-04-2023 at 03:33 PM. Reason: added loosen 1/4 turn
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    Active Member USAF's Avatar
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    I believe its out of warranty, I was hoping this would be a simple job, I don't want to get in over my head here. Upon looking closer at the leak, It seems to be coming from the water pump housing it self, where it is seemed together. It looks like 2 parts to it.

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    Very Active Member Snowbelt Spyder's Avatar
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    Quote Originally Posted by USAF View Post
    I believe its out of warranty, I was hoping this would be a simple job, I don't want to get in over my head here. Upon looking closer at the leak, It seems to be coming from the water pump housing it self, where it is seemed together. It looks like 2 parts to it.
    Have your friend spend the 25 bucks to get you the shop manual. But, double check on the warranty time, and make sure he didn't buy an extended warranty but may not recall that.

    https://brpmanuals.com/product/2021-...enance-manual/

    As pointed out, one of the weird things is that the thermostat is embedded inside the water pump.

    It doesn't help to know your way around motorcycles. It helps to know your way around Rotax engines. And what kind of leak rate are you guys talking about. A drop a minute vs a drop a day makes a difference over what to do about it. And look at Bert's post. it might not hurt to re-torque the casing. Just saying. Good luck.


    Doug

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    Might be worth trying some Bars Leak.

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    Active Member USAF's Avatar
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    It only leaks very little when ridden, More of a small seepage, Just enough to drip down the case a bit. I will try that retorque first that was suggested thanks.
    Last edited by USAF; 07-04-2023 at 06:35 PM.

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    Very Active Member Lew L's Avatar
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    .

    I have removed and replaced the water pump Twice. Once because the thermostat failed ( in two pieces) and once because the one I purchased leaked no matter what I did. Later the shop said it was a BAD pump and got a good one for me under their parts warranty.

    It no easy job to R and R the waterpump. Small hands help. Removing the hoses is a pain because of the clamps and their location. The small hose bung to the coolant tank is prone to breaking ( be careful) Ball hex wrenches are needed. Removing the Tupperware isn't to bad.

    Good Luck---- consider letting the shop break parts and cut up their hands.

    Lew L
    Last edited by Lew L; 07-04-2023 at 09:32 PM.
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  10. #10
    SpyderLovers Ambassador Little Blue's Avatar
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    1330 Water pump

    ...First off...the Water Pump is a real pistol of a repair job. I was thinking of doing this repair, but I let the Dealer have the 'fun'.

    My Water Pump was done and covered by the Warranty. I hope you have a warranty plan.

    Good Luck on Your Mission. ....
    Last edited by Peter Aawen; 07-05-2023 at 07:43 AM. Reason: Moved Post title into text - many won't see post titles, and they mess with Searching! ;-)
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    Very Active Member K80Shooter's Avatar
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    Call any dealership and give them the serial number. They can tell you about the status of the warranty.
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    When my 2022 was new in January, I had the exact same problem. (Photo attached). I didn’t want to haul it 2 hrs each way back to the dealer, so after checking on the price and availability of a new pump, I decided to try snugging up the bolts on the pump - just a bit more. The leak stopped!

    May be worth a try.
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    2022 RT-L , Silver

  13. #13
    Active Member USAF's Avatar
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    Quote Originally Posted by JSRT View Post
    When my 2022 was new in January, I had the exact same problem. (Photo attached). I didn’t want to haul it 2 hrs each way back to the dealer, so after checking on the price and availability of a new pump, I decided to try snugging up the bolts on the pump - just a bit more. The leak stopped!

    May be worth a try.
    That looks to be the same issue he is having. I am going to try and do that over the weekend when he brings it over. How much more did you tighten up the bolts ? 1/4 turn ? I don't want to crack the plastic housing ! I will also try what was recommended with the loosen and retorque procedure.

    Thanks !

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    Okay USAF -- you're getting a bit too casual here with a plastic part that is difficult to replace.

    Reread my Step 2 -- get a service manual so you know the correct torque values.

    As to why I say loosen 1/4 turn before tightening, BRP uses a thread locking compound (typically colored Yellow) which you must break loose before a correct torque value can be obtained. And I said repeatedly (I suggest a minimum of three) to clear the compound from the threads (if it was my water pump I'd remove the fastener completely and clean it with a thread chase).

    Regarding a torque wrench I recommend a 1/4" calibrated digital torque wrench (which is what I use, they're not that expensive only $100).

    Because if something goes wrong you will be reconsidering my Step 1.
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    If re-torquing doesn't solve the problem try the old fashioned remedy of Radiator Stop Leak. About 45 years ago I successfully sealed a crack in the aluminum engine block of a 1992 Datsun 1200! I put the stop leak in, covered the radiator, and went for a drive. When the engine was near boiling I stopped, yanked the cardboard from in front of the radiator, and quickly took off. The engine cooled and closed the crack. Never leaked again.

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  16. #16
    Very Active Member PMK's Avatar
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    Reviving an older topic in an effort to clarify a few details.

    As insight, our 2014 RTS SE6, began having temp fluctuations while idling. Fans operated normal. Then other times, all would be normal, we would stop and shut down for a few minutes. Upon restarting, the indicated temps crept up well above 1/2 way on the gauge, fans came on, temps kept increasing, fans blowing forward, but no heat was coming off radiators. Coolant level was adequate. Expected a failing thermostat.

    Removed a few body panels. Removed fasteners that mount computer and set it to the side without disconnecting wiring connectors.

    Previously, I had removed the oem hose clamps, so disconnecting the hoses at the water pump spigots was easy. I drained the coolant via the already disconnected hoses.

    So to clarify a few things posted previously.

    1) Regarding the fasteners securing the water pump to the engine case, none had thread locking compound on them.

    2) Concern was previously mentioned regarding the thermoplastic water pump housing being damaged by over torquing the fasteners that secure the water pump. To clarify further, each of the water pump fasteners can not be tightened to damage the plastic. Each fastener has a metal crush sleeve that prevents damaging the plastic housing. Yes, you could overtighten and strip the case threads, but crushing the plastic is addressed with the crush sleeves.

    3) During removal, withdrawing the water pump from the engine case, use care as the plastic gear can slide off the water pump shaft. I did not have any issue with the gear dropping into the cases, not sure if it could be dropped, simply be aware.

    4) There are no paper gaskets, an O ring seals the water pump housing to the engine case. A preformed packing seals the water passages to the engine case.

    5) I did remove the thermostat. My goal was to hopefully replace just the thermostat. Unfortunately, the thermostat had no identifiable part number on it. A trip to NAPA, going thru every thermostat on their shelf found no match.

    The thermostat is a typical 2.1” diameter type, 80*c, however the bypass plate diameter would not match anything I compared it too. The system utilizes the modern bypass design. Failing to use a bypass thermostat will cause overheating unless the pump housing is modified, and even that is no assurance if a non correct bypass style thermostat is tried.

    So, a new water pump assembly is on its way. I know several folks mentioned replacement of the water pump was a difficult task to accomplish. My opinion found the task was straight forward and minimally difficult.

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    Thumbs up

    Thank you for this information -- not what I expected from other forum posts and reading service manual.
    none had thread locking compound on them
    fastener has a metal crush sleeve
    I did remove the thermostat
    the task was straight forward and minimally difficult
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    Very Active Member PMK's Avatar
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    Quote Originally Posted by BertRemington View Post
    Thank you for this information -- not what I expected from other forum posts and reading service manual.
    Simply a FWIW, photos of the oem bolts without thread lock compound, bypass style thermostat, metal crush sleeves in thermoplastic water pump housing and thermostat area of the water pump housing. Unfortunately the housings bypass port is difficult to see in the photo.

  19. #19
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    Quote Originally Posted by PMK View Post
    Reviving an older topic in an effort to clarify a few details.

    ...

    The thermostat is a typical 2.1” diameter type, 80*c, however the bypass plate diameter would not match anything I compared it too. The system utilizes the modern bypass design. Failing to use a bypass thermostat will cause overheating unless the pump housing is modified, and even that is no assurance if a non correct bypass style thermostat is tried.

    So, a new water pump assembly is on its way. I know several folks mentioned replacement of the water pump was a difficult task to accomplish. My opinion found the task was straight forward and minimally difficult.
    Thanks so much for this information. Very helpful to read info from folks who have done the job.

    Very unfortunate that you couldn't find a thermostat option. I was helping someone who's thermostat "housing" had blown out. They were hoping to replace the thermostat and do some sort of plastic welding to seal it back up. they also couldn't find a compatible thermostat. It sucks that you have to order a whole housing which isn't cheap.

    Quote Originally Posted by BertRemington View Post
    Thank you for this information -- not what I expected from other forum posts and reading service manual.
    So for all your doom and gloom posts about this - have you never done it yourself?
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    Talking

    Okay I gotta tug my forelock a little harder. I can do that ...

    WRT to thread-locking compound, bad assumption on my part. Rereading the service manual, at the beginning of the Cooling System section Loctite is cited as a Service Product. But a more careful reading indicates the Loctite is not used for the water pump holddown screws but rather the water pump gears.

    So I searched a bit further for more commonly replaced items and found:

    CPS -- Loctite, unknown crush sleeve
    CAPS -- no Loctite, crush sleeve
    MAPTS -- no Loctite, no crush sleeve
    HCM Filter -- no Loctite, crush sleeve

    WRT thermostat, I didn't know it was removeable. As PMK noted it doesn't show in the parts catalog. I did note in PMK's photo there were stamped numbers on the thermostat rim. In my experience, BRP engine-related parts (eg CPS) have Bosch part numbers which respond to an internet search. Maybe if PMK can post another photo showing those numbers more clearly???

    WRT task score, let's remember PMK is much higher on the mechanic skills scorecard than most of us.
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  21. #21
    Very Active Member PMK's Avatar
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    Quote Originally Posted by BertRemington View Post

    WRT thermostat, I didn't know it was removeable. As PMK noted it doesn't show in the parts catalog. I did note in PMK's photo there were stamped numbers on the thermostat rim. In my experience, BRP engine-related parts (eg CPS) have Bosch part numbers which respond to an internet search. Maybe if PMK can post another photo showing those numbers more clearly???

    WRT task score, let's remember PMK is much higher on the mechanic skills scorecard than most of us.
    Regarding the thermostat, essentially, it should be considered not removable. Yes, I did remove it, without damage to the housing parts and such, but it was not intended to be removed.

    My intended plan was expecting a failed thermostat, based on the indications. With that, I ordered an inline thermostat housing. Hope was to remove a failing thermostat completely and allow the new inline thermostat to regulate temps.

    Unfortunately, my ship sank when I saw the thermostat was the bypass type.

    At that point I began searching for a replacement thermostat. The thermostat manufacturer is BTT / Mahle. The temp rating is 80*c. The part number appears to be 1.421, which mimics BTT part numbers. Bummer though that the PN found no matches. I did email BTT in regards to the PN but never got a reply.

    While I appreciate the kind words regarding my mechanical skills, I still consider the task pretty straight forward. Yes, body panels of plastic must be removed, that takes time. Truism that the oem hose clamps can have fun with folks trying to remove them, oh well. The rest though is just basic water pump change tasks.

    Thermostat photos, if you care to hunt a bit.
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    Smile

    BTT was absorbed into Mahle. Mahle has an excellent website to search for replacement parts. That 54mm diameter BTT thermostat would be in the Mahle TX 1x 80D series of thermostats. Except it isn't. None of them have the vent hole. So our thermostat is a BRP/Rotax specific part integrated into the water pump assembly.
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