Cat 955L hydraulic pump question

Lumberjack Matt said: The simplest explanation would seem to be that they just threw the 955L decals on after repainting it at some point. Click to expand... It wouldn't be the first time we have come across this. Lumberjack Matt said: It was really hard finding a newer version of publication UMX00085 that covers my serial number, hopefully the one that's coming from ServiceManualPro will do the job. Click to expand... UMX00085 is available as a pdf download, on a CD, or in paper form from HERE Just put UMX00085 in the box and click the Search button.

UMX00085 is the manual that I own a hard copy of, it was published in 1972 and the highest S/N mentioned is 71J39XX. It doesn't appear to cover the changeover to the 3304 in it either. From my previous experience with my D4, if Cat has a parts manual that covers later serial numbers, it is released under a new publication number, not as a second edition of the original publication number. I can't really seem to find a 71J only parts manual for the higher serial numbers, so maybe there isn't one or it was rolled into an 85J parts manual. edit: there is a newer parts manual that starts at s/n 71J4558-up for the 955L

Lumberjack Matt said: From my previous experience with my D4, if Cat has a parts manual that covers later serial numbers, it is released under a new publication number, not as a second edition of the original publication number. I can't really seem to find a 71J only parts manual for the higher serial numbers, so maybe there isn't one or it was rolled into an 85J parts manual. Click to expand... For machines 71J4558-Up (955L) with the 3304 engine the Parts Manual is XMBP9568. Note that this one shows the 43V-prefix 3304 engine on the cover. See below.

When you are in the seat the hydro pump is below and in front of your left foot mounted on the front of the transmission. I think you would want to remove the dash to lift it up and out.

you can get at the pump from the engine side with the loader arms lifted all the way up, the later L series usually have a cover over this area that is bolted in place, the cover is a pig to remove and comes free in 2 parts, it's one of those items that is best left in a dark corner and not refitted.

Nige said: If the Serial Number on the engine is the same as the machine (i.e. 71J4277) then the engine is a D330C. If it was a 3304 the engine Serial Number would be 45Vxxxxx. The change from D-series engines to 3300-series was the time at which engines got their own separate Serial Numbers instead of carrying the machine S/N. Click to expand... Ok finally got some updates and a resolution on this. I had some time to pull the side panels off the machine, and the block casting number is 2P940, which is a 3304 block. Additionally the oil filter housing is a 3304/3306 part number along with the governor housing. I got in touch with Mark over at ServiceManualPro who did some digging, it turns out there is a discrepancy in the Cat literature. According to the sales brochure, the changeover from 955K->955L happened at serial number 71J3198 in 1972, not 71J4558. This number is significant because it is mentioned throughout my parts manual as the final serial number covered by it. There appears to no specific parts manual covering the spread from 3199 to 4557, although the manual that starts at 4558 will probably be the most helpful for me. Not sure what happened exactly, but it is easy to guess that there was miscommunication between Mitsubishi and Japan back in the day. Anyways, I guess mystery solved. This info will probably never benefit anyone else besides me, but it was interesting trying to figure it all out. The machine cleaned up very nicely after hosing it down with a bleach solution to kill all the algae growing on it.

Lumberjack Matt said: Ok finally got some updates and a resolution on this. I had some time to pull the side panels off the machine, and the block casting number is 2P940, which is a 3304 block. Additionally the oil filter housing is a 3304/3306 part number along with the governor housing. I got in touch with Mark over at ServiceManualPro who did some digging, it turns out there is a discrepancy in the Cat literature. According to the sales brochure, the changeover from 955K->955L happened at serial number 71J3198 in 1972, not 71J4558. This number is significant because it is mentioned throughout my parts manual as the final serial number covered by it. There appears to no specific parts manual covering the spread from 3199 to 4557, although the manual that starts at 4558 will probably be the most helpful for me. Not sure what happened exactly, but it is easy to guess that there was miscommunication between Mitsubishi and Japan back in the day. Anyways, I guess mystery solved. This info will probably never benefit anyone else besides me, but it was interesting trying to figure it all out. The machine cleaned up very nicely after hosing it down with a bleach solution to kill all the algae growing on it. Click to expand... No miscommunication, the D330c was increased from 115h.p. to 130h.p. at serial #71J3198 and they became L series at that point. At serial 71J4558, the D330c was discontinued and the 43V series 3304 took it's place. At least that's what the book I have says and I believe it to be right in this instance (it isn't always).

Lumberjack Matt said: I had some time to pull the side panels off the machine, and the block casting number is 2P940, which is a 3304 block. Additionally the oil filter housing is a 3304/3306 part number along with the governor housing. Click to expand... All of those parts were carried over from the D330C to the 3304 engine, so not conclusive either way. The fact that your engine block carries the same Serial Number as the tractor conclusively identifies the engine as a D330C. As @Rusted mentions above the D330C power was increased from to 130BHP from machine 71J3198 onwards and that was apparently the same time as the tractors started being badged as L models. If your machine had a 3304 (the same point from where engines started to carry their own unique Serial Number separate to the S/N of the machine in which they were installed) then the engine S/N plate would be stamped 45Vxxxxx.up As was mentioned earlier the correct Parts Manual for any 71J-prefix machine with a S/N between 1 and 4557 is UMX00085. There will be different pages in it that will take account the 115-130 BHP power increase that was introduced from 71J3198 up to 71J4557.