Adjustment of modulating pressure with an adjustable cap
Type ar · topic 27.60 · version 0104 · 1999-08-23
Applies to: TRANSMISSION 722.330 in MODEL 901.3, 902.3, 903.3 with ENGINE 601.943 TRANSMISSION 722.375 in MODEL 901.4, 902.4, 903.4, 904.4 with ENGINE 602.980 TRANSMISSION 722.376 in MODEL 901.06, 902.0, 903.0, 904.0 with ENGINE 111.979 TRANSMISSION 722.337 in MODEL 903.312 /362 with ENGINE 601.943 with CODE (Z22) Freight delivery service for post office TRANSMISSION 722.332 in MODEL 903.462 /463 with ENGINE 602.980 with CODE (ZB2) Fedex supply
Also applies to engines/gearboxes: 111 979, 722 330, 722 332, 722 337, 722 375, 722 376
AR27.60-D-1405-02A
Adjustment of modulating pressure with an adjustable cap
D27.60-0019-01
Adjustment 1 The modulating pressure can be reduced by 0.2 bar by rotating the cap from position "A" to "B".
If this does not result in a precise adjustment of the modulating pressure, carry out basic adjustment.
D27.60-0020-01
Basic adjustment 1 Remove cap on the vacuum unit.
The cap is irreparably damaged when removed and must be replaced.
D27.60-0018-01
2 Pull the adjusting key out of the locking cap until it can be rotated.
One clockwise rotation results in a pressure increase of 0.4 bar. One counterclockwise rotation results in a pressure decrease of 0.4 bar.
D27.60-0015-01
Adjustment process 1 Check and record modulating pressure at idle speed when the vehicle is stationary. Check and record modulating pressure at wide open throttle at 50 km/h. Compensate the calculated pressure difference when vehicle is stationary (at idle speed). After the adjustment process, check the modulating pressure at wide open throttle at 50 km/h again and repeat the adjustment process, if necessary.
