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Cat d4h transmission

CatToy

Well-Known Member
Joined
Nov 2, 2014
Messages
247
Location
SE Tn
When you say "idle up to go in gear" are you meaning being able to put the gear lever in a gear position or for the dozer to start moving? My 1988 D4H easily shifted at any engine speed but moved as soon as it was in a gear position unless the decelerator was pushed all the way down.
 
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CatToy

Well-Known Member
Joined
Nov 2, 2014
Messages
247
Location
SE Tn
Well, some of the real experts on here may be able to tell you what is going on, but it sounds like your trans pressures are low. Hows the trans fluid level, have you changed the filters and fluid yet?

Off topic but I graduated from Murray State 30 years ago...
 

victorkoehn

Member
Joined
Feb 21, 2016
Messages
6
Location
Murray ky
Level is fine!! But I have not changed the filters!! Another question is do I always need to press in the decelerater when I shift or go from forward to reverse!?
 

Bob/Ont

Senior Member
Joined
Sep 18, 2012
Messages
1,605
Location
Ontario
It's easier on the power train gears if you decelerate to shift. If you have a trans pump flow problem you will have trans overheating problems.
Later Bob
 

Nige

Senior Member
Joined
Jun 22, 2011
Messages
29,374
Location
G..G..G..Granville.........!! Fetch your cloth.
It goes in to gear at low idle but will not move until you rev it up bout half way!!
If you are moving on dirt then that would not seem too far out. The only way a tractor will generally move with the engine at idling speed is with absolutely clean undercarriage on hard smooth concrete.

Regarding the decelerator it's definitely a good plan to use it most if not all of the time during changes of direction to reduce the load on the transmission. The factory put it there for a reason...!
 
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