Usage:
Type 1 Shown
Type 1: 2AC1-2AC384; 3AC1-3AC466; Type 2: 2AC385-Up; 3AC467-Up; 4NK1-Up
NOTE: While the Type 1 and Type 2 linkages look somewhat different, the adjustment procedures are the same.
Torque for all 3/8 in. locknuts (jam nuts) that hold the rod ends in place on the rods ... 14 ± 4 N·m (10 ± 3 lb ft)
Torque for all 3/8 in. locknuts on rod end ball studs ... 25 ± 7 N·m (18 ± 5 lb ft)
Torque for all 1/2 in. locknuts (jam nuts) that hold the rod ends on the rods ... 45 ± 7 N·m (33 ± 5 lb ft)
Torque for knob (2) locknut ... 14 ± 4 N·m (10 ± 3 lb ft)
NOTE: All rod assembly measurements must be made in a straight line between the centerlines of the rod end mounting holes.
(5) Assembled length of rod assembly ... 317 ± 2 mm (12.5 ± .08 in)
(6) Assembled length of rod assembly:
Type 1 ... 202 ± 2 mm (8.0 ± .08 in)
Type 2 ... 195 ± 2 mm (7.7 ± .08 in)
Procedure to Adjust Forward-Reverse Linkage
1. Install adjusted rod assembly (5).
2. Position lever (1) centered in FORWARD-REVERSE slot (as shown).
3. Disconnect rod (7) at lever (8).
4. Move lever (8) to NEUTRAL position (as shown). This is approximately 5° forward from vertical.
5. Adjust the length of rod assembly (7) to obtain a free fit of pin in lever (8).
Procedure for Adjustment of Parking Brake
NOTE: While the Type 1 and Type 2 linkages look somewhat different, the adjustment procedures are the same.
1. Set knob (2) to dimension (A) (parking brake ON position) of ... 106 ± 2 mm (4.2 ± .08 in)
2. Adjust the length of rod assembly (4) to obtain a free fit of pin in lever (3).
3. Install adjusted rod assembly (6).
NOTE: Do not change the length of rod assembly (6) in further adjustments.
4. Disconnect rod assembly (9) at its upper end.
5. Pull up on lever (10) until resistance is felt. Do not stretch spring can on rod (9) if so equipped. Adjust the length of rod assembly (9) until pin fits freely through upper rod end. Then turn upper rod end down two full turns (shorten) and install rod assembly (9).
6. To check parking brake adjustment, install a 0 to 4000 kPa (0 to 600 psi) pressure gauge on either the right or left brake pressure tap.
7. Start the engine and run it at low idle.
8. With parking brake knob (2) in the brake ON position (knob pulled UP), the pressure gauge must read less than 300 kPa (44 psi). If the pressure is not less than 300 kPa (44 psi), make rod assembly (9) shorter and check the pressure again.
9. Push parking brake knob (2) down to the brake OFF position. The pressure gauge must read 2750 ± 150 kPa (400 ± 22 psi). If the pressure reading is low, make rod assembly (9) longer and check the pressure again.
10. After adjusting the linkage in Steps 8 and 9, attach a 0 to 4000 kPa (0 to 600 psi) gauge to the transmission pump pressure tap on the transmission. With the engine running at low idle, move parking brake knob from brake ON to brake OFF (full travel each way). The P1 pressure should read exactly the same with the parking brake fully ON or fully OFF.
11. If the transmission pump pressure is not the same with the parking brake ON as it is with the parking brake OFF, the parking brake valve is leaking oil and the linkage must be adjusted further using the following instructions:
A. If the transmission pump pressure with the parking brake OFF is less than the transmission pump pressure with the parking brake ON, lengthen rod assembly (9).
B. If the transmission pump pressure with the parking brake ON is less than the transmission pump pressure with the parking brake OFF, shorten rod assembly (9).
12. If linkage adjustments are made in Step 11, repeat the pressure checks in Steps 7, 8, and 9. Readjust as necessary until all pressures are correct.