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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Hehe sorry it might be the language barrier The screw would have to be 1.75 inch long not 1 inch and it’s not the one you marked on the photo. For you to assume I was thinking of using a 1 inch screw in place of a longer bolt you must think I’m an idiot This is the last stage of the rebuild...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    So i took the backplate to the shop and got 4 countersunk holes instead of 3 the guy who screwed this job says I can just use a spacer and a regular bolt I’m thinking of using a countersunk screw or a regular screw with some jd weld and a spacer But I can’t figure out which bolt is the right...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    well the screws are a bit larger than the ones im replacing so its got plenty of threads, but the hole its supposed to be tapered to fit the tapered head ill figure it out on monday and report back tthanks guys
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Ok so I will remove the pump and make sure the stupid screws sit flush with the back cover I think I’m gonna a have to make the holes a bit wider then
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    So I have a question should I have fastened the tapered screws more the heads are like 1 mm protruding from the back cover they don’t sit flush The back cover I had it made in a shop but maybe the tapered screw holes should be a bit wider or what do you think?
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    I did find tapered screws and finished bolting Down everything tomorrow I’ll start mounting it to the engine block hehehe it was such a cool project My advice to others is don’t buy aftermarket parts especially the rebuild kits just get everything old stock if possible off eBay and just be...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    So update: I got a new oem impeller and seal both old stock The after market seal I got first it’s too thick and doesn’t sit properly against at the housing hole where the shafts supposed to go through so now the clearance problem is solved Last challenge: there were three self tapping I...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Yeah I used the old shaft just for that one photo for some reason but I got a new shaft oem
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Yeah but where ?? I will keep trying I like the idea of buying machines and fixing them and saving thousands of dollars but like I’m noticing it’s not easy because a lot of the rebuild kits are Chinese crap for this pump I’m particular the kit didn’t include and impeller at all Where can I buy...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    No, I broke a new aftermarket impeller with the press but it was too beefy it wasn’t a good fit it had a copper ring instead of ceramic tried to jb weld that ring to the other impeller old stock oem but it was again too high up the aftermarket design had a recessed seat around the middle but...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    yeah you were right so I finally understood whats going to happen with the 8mm thick ceramic ring that I got it wont work because There is going to be a 5 mm gap between the pump housing and the back plate so... big problem it will be impossible to install obviously ok so ill have order a...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Ohh so I bought the seal from the caterpillar dealer it’s the carbon ring with the spring and the silver lip, I bought the impeller old stock caterpillar from eBay, it had a 3 mm thick ceramic seal ring glued on but I destroyed it because I didn’t have a shop press and I was using a hammer...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Yeah no the impeller had a 3mm thick ceramic ring that I destroyed by accident because I didn’t use a shop press at first to insert the shaft end into the impeller, but there is some clearance of about 1 mm for when the parts heat up and expand, as I am understanding this is tip of the shaft...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Thanks for the advice Joe I found a ceramic seal it’s called “mechanical seal” I think it’s a bit thicker but I think it will work I used my press to see if it fits right or if it was too tight it looks ok to me hehehe thanks this website is amazing So I will just use atv silicone to glue the...
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    Ok thanks! ill try to glue a new ring to the impeller I got with the chipped ceramic ring, maybe high temperature epoxy will work i will google whats best, I finally bought a shop press the stupid ceramic ring broke because I tried pressing the impeller into the shaft using a rubber mallet, big...
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    Rebuilding water pump 1s5910 for cat d4d 78a dust seal question

    Thanks! yeah I got the 7f2122 seal but I think it doesnt fit properly there is like a 1 mm gap its just a dust seal apparently so I will leave it like this, thanks Ill let you know how it went
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    so I can just glue the new ceramic shield to this old impeller with like super glue or something? I think I will buy a new impeller because this old stock impeller looks a bit rusty
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    Water pump rebuild 1s5910 for cat d4d 78a impeller assembly question

    So I am working on rebuilding the water pump for my dozer it’s this one I bought the impeller assembly 3s6607 and it looked fine but there was a lot of resistance with the shaft that has to go through the hole at the center of the impeller assembly and I broke the ceramic or plastic ring it...
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    Rebuilding water pump 1s5910 for cat d4d 78a dust seal question

    So I have been working on rebuilding the water pump of my d4d So this is the parts diagram that I am using I ordered the parts online and first thing I noticed there is this cage that bolts to the pump assembly (3s6610) and there is a seal (5m9738) there is no mention of a sleeve shaft wear...
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    Cat d4d 78a water pump 2s4697 belt driven repair kit question

    wow thanks!!! I will order the kit and try rebuilding the pump thanks
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