![]() UNLESS its got a chain on it with a extra link ? Was a option on D4D for a larger front idler for dozer work, dunno whether they had a extra link for this or not.? Mine has and am pretty sure its 35 links plus the master could be 34 plus master. I,m just struggling to see how you could run out of adjustment but the sprockets still look good CATERPILLAR D4D Cat D4D Dozer - Model D4PS, serial 83J3854, meter reads 1634 hours, power shift, 3 forward and 3 reverse, 10 x 28' blade manual angle, engine 3304PC, cat winch, good under.See More Details. Clutch oil change is on for Friday, as is an engine oil change. Its under the bolted flange on the bottom of the housing. If you change the oil in the clutch you should pull and check the suction strainer while your there. I ran mine till they were absolutely rooted, bushings almost broken and just kept building up sprockets in place with me welder to finish its job, towing a roller then replaced the lot with a good 2nd hand digger chain with new pins and bushes and new sprockets. Old Magnet said: Capacities are listed in the back of the 78A1-up Parts Book. The sprockets in the OP machine didn,t look that bad, but a better pic would confirm there condition. Fits Caterpillar Cylinders 4S Dozer Tilt Cylinder 5J1603 D4D Dozer & Tilt Cylinder 5J1603 D4E Dozer & Tilt Cylinder 5J1603 D6C, 4S Dozer Tilt. But that's another more dangerous affair to fix. Having broken coils in the spring is also another common D4D fault, and spring becomes weak and compresses too easy. Also take covers off the spring and visually check condition of spring. (GST applies to buyers in Australia) (Price entered as: AUD 70,000) Finance for as low as CAD 1,202.50 monthly. Chain should still be tight if suddenly gone loose then seals are blown. ![]() To check track adjuster seals put a drawbar pin etc in top of sprocket between chain and back up this compresses the spring and puts maximum load on the seals doing so. ![]() After that it won,t seal and you have to replace pins and bushes or try to remove a link. The maximum length it can come out is 5 and 1/8 inchs. Measure the gap between the end of the spring and the flange on the adjuster seal this is the distance the cylinder has extended. Sometimes you can adjust the tracks so they seem tight, but if the adjuster seals are damaged they will soon slacken off during work. SERIAL NUMBER CAT DOZER Serial Number Location for CAT Dozer Models: D2, D3B, D3C, D3K, D4B, D4C, D4D, D4E, D4G, D4H, D4K, D5B, D5C, D5E, D5G, D5H, D5K, D5M, D6B, D6C.
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