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Page Title: Table B1. Clutch Pressure Test Conditions (Continued)
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W T E CWI IECEII E LECTO NNCC CONTROLS S RT R OLESL E S HINO T I ANUALA N U A L
T I I L EC T R RO I I C O N T R O L T OUB U B HOOT O G MN G M
APPENDIX B -- CHECKING CLUTCH AND RETARDER PRESSURES
Table B1. Clutch Pressure Test Conditions (Continued)
Transmission Model/
Sump Fluid
Test Type
Engine rpm
Temperature
Range
Clutches Pressurized
MD 3070 -- High Speed
20802120
7193C
Reverse
C3 C5
(160200F)
Neutral
C5
LowC
C3 C6
C1 C5
1C
2C
C1 C4
2L
C1 C4 LU
3L
C1 C3 LU
C1 C2 LU
4L
C2 C3 LU
5L
6L
C2 C4 LU
HD/B 500 -- High Speed
17801820
7193C
Reverse
C3 C5
(160200F)
Neutral
C5
LowC**
C1 C6
C1 C5
1C
2C
C1 C4
2L
C1 C4 LU
C1 C3 LU
3L
4L
C1 C2 LU
C2 C3 LU
5L
6L
C2 C4 LU
** Only applies to HD 4070.
C.
Comparing Recorded Data to Specifications
1. Be sure that engine speed and transmission sump fluid temperatures were within the values
specified in Table B1.
2. Compare the main pressure and clutch pressure data, recorded in Step B, with the specifications in
3. If clutch pressures are within specifications, return the transmission and vehicle to their original
configuration and proceed with electrical troubleshooting.
4. If clutch pressures are not within specification, take corrective action to replace the internal parts
of the transmission necessary to correct the problem. (Refer to the Transmission Service Manual
for the model being checked.)
5. Recheck pressure values after the transmission has been repaired.
6. Return the transmission to its original configuration. (Remove instrumentation and reinstall any
components removed for the pressure testing.)
0021 00127

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