Table B1. Clutch Pressure Test Conditions (Continued)

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

LowC

C3 C6

C1 C5

C1 C4

C1 C4 LU

C1 C3 LU

C1 C2 LU

C2 C3 LU

C2 C4 LU

HD/B 500 -- High Speed

17801820

7193C

Reverse

C3 C5

(160200F)

Neutral

LowC**

C1 C6

C1 C5

C1 C4

C1 C4 LU

C1 C3 LU

C1 C2 LU

C2 C3 LU

C2 C4 LU

** Only applies to HD 4070.

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

Table B2.

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.)

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