Previous thread from a few days ago about "D6c Steering Clutches Not Completely Releasing" got me wondering about my clutches, which act the same way.
Looked up the specs for my s/n range and started checking pressures.
----------------------------------------
Pump pressure at "G" (trans filter) spec: 315 psi @ low idle, 350 ±10 @ high idle (in neutral)
Checks: 300 @ low idle and 410 @ high idle
----------------------------------------
Pump pressure at "K" (steering chk valve) spec: 315 psi min @ low idle w/clutches released (I assume that means levers pulled out), (No High idle spec)
Checks:
330 psi w/both levers in
225 psi w/both levers pulled
265 psi w/left lever pulled
265 psi w/right lever pulled
---------------------------------------
LH Clutch pressure at "J" (pipe to LH clutch) Spec: 315 psi min @ low idle w/clutches released
Checks:
0 psi w/levers in
220 psi w/both levers pulled
260 psi w/LH lever pulled
---------------------------------------
RH Clutch pressure at "H" (pipe to RH clutch) Spec: 315 psi min @ low idle w/clutches released
Checks:
0 psi w/levers in
200 psi w/both levers pulled
240 psi w/RH lever pulled
---------------------------------------
Hope that isn't too confusing....maybe someone can tell me what could be causing the pressure variations.
The pressure at the filter seems odd...too low at low idle & too high at high idle. Has someone boosted the pressure to compensate for a worn pump?
Note: The seals at the steering clutch pistons have been replaced to try and help clutch dragging (mostly when cold), but it didn't improve it.
I haven't checked any of the other trans pressures listed on the spec page yet....mostly concerned about clutch operation for now.
Next time I'm up at Ziegler's I may see if there's someone in shop that's old enough to have some experience with a D6c.
Scan_Doc0001.pdf
Scan_Doc0002.pdf
Scan_Doc0003.pdf
Scan_Doc0004.pdf
Scan_Doc0005.pdf
Looked up the specs for my s/n range and started checking pressures.
----------------------------------------
Pump pressure at "G" (trans filter) spec: 315 psi @ low idle, 350 ±10 @ high idle (in neutral)
Checks: 300 @ low idle and 410 @ high idle
----------------------------------------
Pump pressure at "K" (steering chk valve) spec: 315 psi min @ low idle w/clutches released (I assume that means levers pulled out), (No High idle spec)
Checks:
330 psi w/both levers in
225 psi w/both levers pulled
265 psi w/left lever pulled
265 psi w/right lever pulled
---------------------------------------
LH Clutch pressure at "J" (pipe to LH clutch) Spec: 315 psi min @ low idle w/clutches released
Checks:
0 psi w/levers in
220 psi w/both levers pulled
260 psi w/LH lever pulled
---------------------------------------
RH Clutch pressure at "H" (pipe to RH clutch) Spec: 315 psi min @ low idle w/clutches released
Checks:
0 psi w/levers in
200 psi w/both levers pulled
240 psi w/RH lever pulled
---------------------------------------
Hope that isn't too confusing....maybe someone can tell me what could be causing the pressure variations.
The pressure at the filter seems odd...too low at low idle & too high at high idle. Has someone boosted the pressure to compensate for a worn pump?
Note: The seals at the steering clutch pistons have been replaced to try and help clutch dragging (mostly when cold), but it didn't improve it.
I haven't checked any of the other trans pressures listed on the spec page yet....mostly concerned about clutch operation for now.
Next time I'm up at Ziegler's I may see if there's someone in shop that's old enough to have some experience with a D6c.
Scan_Doc0001.pdf
Scan_Doc0002.pdf
Scan_Doc0003.pdf
Scan_Doc0004.pdf
Scan_Doc0005.pdf
D6c Steering Clutches (again)
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