PISTON AS 3109905 - Caterpillar

Pressure Tap Locations
Illustration 2 g01122934
(A) Torque converter inlet pressure tap (B) Torque converter outlet pressure tap (C) Pressure tap for the oil pump (D) Pressure tap for the Number 5 clutch (E) Pressure tap for the Number 6 clutch (F) Pressure tap for the Number 4 clutch (G) Pressure tap for the Number 1 clutch (H) Pressure tap for the Number 3 clutch (J) Pressure tap for the Number 2 clutch (K) Pressure tap for the lubrication oil
Illustration 3 g00819540
Torque Converter Outlet Relief Valve (4) Relief valve body (17) Relief valve (18) Spacers
Table 3
Spacers    
Pressure Change for the Valve (1)    
Description     Thickness     Pressure Change     Location of Spacers    
5M-9622 Spacer (28)    
1.60 mm (0.063 inch)    
39.1 kPa (5.67 psi)     Outlet relief valve (4)    
5M-9623 Spacer (28)    
0.90 mm (0.035 inch)    
22.3 kPa (3.24 psi)    
5M-9624 Spacer (28)    
0.25 mm (0.010 inch)    
7.6 kPa (1.10 psi)    
( 1 ) Result of the addition of one spacer or the removal of one spacer to the valve.
Table 4
Speed Range and Direction     Engaged Clutches and Energized Solenoids    
Fourth Speed Forward     3 and 2    
Third Speed Forward     4 and 2    
Second Speed Forward     5 and 2    
First Speed Forward     6 and 2    
Neutral     3    
First Speed Reverse     6 and 1    
Second Speed Reverse     5 and 1    
Third Speed Reverse     4 and 1    
Fourth Speed Reverse     3 and 1    Transmission Hydraulic Control Relief Valve - Adjust
Perform the following procedure in order to adjust the relief valve. The relief valve maintains the system pressure in the control section of the power train oil pump.
Illustration 4 g00946634
Section view of the transmission hydraulic control relief valve (1) Transmission hydraulic control relief valve (19) Jam nut (20) Adjustment screw
Adjust the relief valve.
Loosen jam nut (19) . Maintain the position of adjustment screw (20) . Note: One turn of the adjustment screw causes the relief valve pressure to change by an increment of 235 kPa (34 psi).
Turn adjustment screw (20) until the desired pressure is attained.
Do not allow adjustment screw to rotate when the jam nut is tightened.
Tighten the jam nut to a torque of 18 4 N m (13 3 lb ft).