Lull 6K Service Manual - Manual (Page 571)

Transmission
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 8-23
ZF Transmission Pressure Checks
Fig. 8-12: Transmission Pressure Check Ports
(Ref. Fig. 8-12) Install 600 psi gauge at control pressure port (65). Check
and record control pressure in neutral at idle rpm.
Note:Pressure port thread is metric (M10X1).
________ psi
(Ref. Fig. 8-12) Using two 600 psi gauges, check and record pressure
readings at the ports listed below.
(Forward) Port 53 ________ psi And Port 56 (1st Gear) ________ psi
(Forward) Port 53
________ psi And Port 57 (2nd Gear) ________ psi
(Forward) Port 53 ________ psi And Port 58 (3rd Gear) ________ psi
And Port 60 (4th Gear) ________ psi
(Reverse) Port 55 ________ psi And Port 56 (1st Gear) ________ psi
(Reverse) Port 55 ________ psi And Port 57 (2nd Gear) ________ psi
(Reverse) Port 55 ________ psi And Port 58 (3rd Gear) ________ psi
E1001
Control Pressure
232–261 PSI (16–18 Bar)
Forward/Reverse
1, 2, 3, 4, Clutch Pressures
232–261 PSI (16–18 Bar)
Reduced Pressure to Solenoids
145 PSI (10 Bar)
2nd (57)
Reverse (55)
1st (56)
3rd (58)
4th (60)
Control
Pressure (65)
Forward (53)