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  1. C

    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...
  2. C

    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...
  3. C

    Cat d4d 78a water pump 2s4697 belt driven repair kit question

    Hello again So the hydraulic cylinder rod is fixed but now the water pump bearing failed, I removed the water pump it says 2s4697 I used the search function here and got the parts diagram and I now know the repair kit for this water pump is a 5s-3351 I would like to know if this repair kit...
  4. C

    Cat d4d 78a1594 broken hydraulic cylinder rod not sure what size rod or part number is needed

    So I changed the hydraulic hoses of the old d4d and everything was fine for 15 minutes then the rod of the hydraulic cylinder left side got separated from where it’s supposed to be screwd into pics: I measured the cylinder but I’m not sure about the length of the rod and I think this rod was...
  5. C

    thinking of fabricating a simple root rake for my cat d4d balderson front blade not sure if my hf welder can handle this job

    So i have a welder 220amps AC its a buzz box my biggest project so far has been a charcoal kiln which was 1/8" plate rolled to form a 2 meter diameter cylinder and the chimneys and top cover. Now I would like to fabricate a simple root rake for my dozer but im not sure if I 1/8 inch square pipe...
    • CaptainB
    • Thread
    • fabrication rootrake welding
    • Replies: 18
    • Forum: Dozers
  6. C

    cat d4d 78a1594 vee belt is it 8m1715 as per the copies CAT_D4D_78A.pdf ??? photo included

    Hi, So the stupid fan belt on my 1963 dozer was so old and brittle it finally snapped and it looks totally rekt. So I need to get it replaced, I found this info: (bottom right of page 22 cat_d4d_78a.pdf) 8m1715 vee belt, is this the correct part number? Could I get an aftermarket belt or is...
  7. C

    Can’t find fill compartment bevel gear, can’t find drain plug for steering clutches either

    so I tried to refill the bevel gear compartment so I looked under the seat like the copies nige shared on Dropbox (page 17) and I couldn’t find either a fill compartment, dipstick, anything, so I am guessing the fill plug is somewhere in the rear of the dozer. There are three bolts that look...
  8. C

    how to know if a steering clutch lever is cast iron or steel

    I would like to know if the levers on my d4d are cast iron or steel, I recently welded a broken lever with a 3/32 6013 AC somebody mentioned how it did welding cast iron but im thinking its steel because it was a bit difficult to weld but not really
  9. C

    Cat d4d bevel gear or final drive oil confusion

    Hello frens So a couple weeks ago I unscrewed a plate that’s below the steering clutch adjustment compartments in the middle almost at the bottom and a lot of gear oil mixed with engine oil drained out from there. Here is a photo I’m assuming I have to use sae 140 gear oil but I’m not sure...
  10. C

    Cat d4d steering lever fork tine snapped and gear oil

    hello today I was trying to adjust the brakes because the machine wasn’t turning right since a couple months The lever fork that goes perpendicular to the lever broke at the fork one of the two points snapped it was starting to wobble a lot there I thought it was nothing but maybe that’s the...
  11. C

    Cat d4d temp gauge not sure needle is showing warm or normal temps

    It’s been very hot lately and I realized the temp gauge is showing what I’m interpreting as running warm is this normal or should I add water? I drained the radiator in January because it got almost below freezing temps. Then I refilled and the gauge had been right in the middle or a bit to the...
  12. C

    wrench set / braker bar / impact sockets

    Hello again, I would like to ask if its true that cheap wrench sets brake or bend right out of the box sometimes and that its better to buy expensive wrenches. If this is true then what brand do you recommend? For example a 1-7/8 "jumbo" wrench for tight spots where a pipe wrench wont fit (like...
  13. C

    new member with a d4d from the 60s direct drive with toolbar

    I would like to find all the manuals and diagrams maintenence guides etc possible for my machine but I have always been able to find CATERPILLAR LUBRICATION AND MAINTENANCE INSTRUCTIONS and OPERATOR'S MANUAL (FORMS FE045116-02 and FE045069-01) from jensales.com. This is my machine I havent...
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