VALVE AS-RELIE 5122570 - Caterpillar

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) - 1/2 Inch Drive T50 Torx Bit 1
- 1/2 Inch Drive x 8 mm Hex Drive 1
B - Guide Studs
M10 by 80 mm 2
C - Guide Studs
M10 by 130 mm 2
(1) Either tool may be necessary in order to install the alternator pulley.
Illustration 1 g03710018
Illustration 2 g03710019
Illustration 3 g03710020
If necessary, follow Step 1.a through Step 1.g in order to install alternator bracket (3) onto the cylinder block.
Ensure that alternator bracket (3) is clean and free from wear and damage. If necessary, replace the alternator bracket.
Ensure that dowels (10) are free from wear and damage. If necessary, replace the dowels.
Install Tooling (B) to the cylinder block in the positions shown in Illustration 2.
Position alternator bracket (3) onto Tooling (B). Install bolts (9) hand tight.
Remove Tooling (B) and install remaining bolts (9) hand tight.
Tighten bolts (9) to a torque of 44 N m (32 lb ft).
If necessary, install belt tensioner (8) onto the alternator bracket. Refer to Disassembly and Assembly, "Belt Tensioner - Install" for the correct procedure.
Illustration 4 g03710022
Typical example
If necessary, follow Step 2.a through Step 2.d in order to install pulley (5) to alternator (2). Note: Either of Tooling (A) may be required in order to carry out the installation of the alternator pulley.
Place alternator (2) in a suitable support.
Ensure that pulley (5) is correctly oriented.
Install pulley (5) and a new nut (7) to alternator shaft (6).
Position a cranked ring spanner onto nut (7) and use a suitable tool in order to prevent the cranked ring spanner from turning. Use Tooling (A) in order to turn the shaft of the alternator in a counterclockwise direction. Tighten the nut to the correct torque. Refer to Specifications, "Alternator" for the correct torque.
Illustration 5 g03710024
Typical example
Illustration 6 g03710026
Typical example
Illustration 7 g03710030
Install Tooling (C) to the alternator bracket in the position shown in Illustration 5.
Install alternator (2) onto Tooling (C). Install bolts (1) and tighten the bolts hand tight.
Remove Tooling (C) and install remaining bolts (1) and tighten the bolts hand tight.
Tighten the bolts in Position (X) to a torque of 50 N m (37 lb ft).
Tighten the bolts in Position (Y) to a torque of 50 N m (37 lb ft).
Connect the wiring harness assembly (not shown) to alternator (2). Install nuts (4) and tighten the nuts to the correct torque. Refer to Specifications, "Alternator" for the correct torque.
Install the alternator belt. Refer to Disassembly and Assembly , "Alternator Belt - Remove and Install" for the correct procedure.
Turn the battery disconnect switch to the ON position.