ROLLER AR-TRACK & CARRIER 7Y1607 - Caterpillar

table
Illustration 1 g01355167
Typical example
Make a temporary identification mark on connections (1).
Use a deep socket to remove connections (1) from electronic unit injectors (2).
Disconnect plugs (7) from harness assemblies (4).
If necessary, follow Step 4.a through Step 4.e in order to remove harness assemblies (4) from valve mechanism cover base (6).
Cut cable strap (3).
Use Tooling (A) to remove retaining ring (5).
From the outside of valve mechanism cover base (6), push harness assembly (4) inward. Withdraw the harness assembly from valve mechanism cover base (6).
Remove O-ring seal (8) from harness assembly (4).
Repeat Step 4.a through Step 4.d in order to remove the remaining harness assembly.
Illustration 2 g01354234
Illustration 3 g01354235
Tightening sequence for the valve mechanism cover base
Gradually loosen the captive bolts that secure the valve mechanism cover base in reverse numerical order. Refer to Illustration 3. This will help prevent distortion of the valve mechanism cover base. Note: The captive bolts cannot be removed from the valve mechanism cover base.
Remove valve mechanism cover base (6) from the cylinder head.
Remove seal (9) from valve mechanism cover base (6). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 1P-1860 Retaining Ring Pliers 1
B 1U-6396 O-Ring Assembly Compound 1
C 247-5377 Torque wrench 1
D 321-5184 Alignment Pins 2
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Use a deep socket in order to remove the electrical connections from the electronic unit injectors. Use of incorrect tooling will result in damage to the electronic unit injectors.
Clean the valve mechanism cover base. Ensure that the gasket surfaces are free from damage.
Illustration 4 g01354234
Typical example
Install gasket (9) to valve mechanism cover base (6). Ensure that the gasket is seated correctly in the groove in the valve mechanism cover base.
Illustration 5 g01354235
Tightening sequence for the valve mechanism cover base
Illustration 6 g01419953
Position valve mechanism cover base (6) onto the cylinder head. Install Tooling (D) in Positions (X) in order to align the valve mechanism cover base.
Gradually tighten the captive bolts that secure the valve mechanism cover base to a torque of 9 N m (79 lb in) in the sequence that is shown in Illustration 5.
Remove Tooling (D) from Positions (X).
Illustration 7 g01355167
Typical example
If necessary, install the harness assemblies for the electronic unit injectors. Follow Step 6.a through Step 6.e in order to install the harness assemblies to the electronic unit injectors.
Ensure that harness assembly (4) and the bore in valve mechanism cover base (6) are clean and free from damage. Replace any damaged components.
Use Tooling (B) to lubricate a new O-ring seal (8). Install O-ring seal (8) onto harness assembly (4).
From the inside of valve mechanism cover base (6), push harness assembly (4) into the valve mechanism cover base.
Use Tooling (A) to install retaining ring (5).
Repeat Step 6.a through Step 6.e for the remaining harness assembly.
Use a deep socket to connect harness assemblies (4) to electronic unit injectors (2). Use Tooling (C) to tighten connectors (1) to a torque of 2.4 N m (21 lb in).
If necessary, install new cable straps (3) to harness assemblies