RETAINER AS 7R8974 - Caterpillar

Introduction
The following test is used to measure engine speed at the flywheel housing.Required Tools
Illustration 1 g02535237
Tooling (C)
Illustration 2 g03261789
Tooling (D)
Table 3
Tooling Item QTY Part
Number Description
C 348-5430 Multi-Tool Gp
C1 1 285-0908 Multi-Tool
C2 1 6V-2198 Cable As
C3 1 9U-5140 Photo Pickup
C4 1 6V-3137 Base
C5 1 1U-6605 Reflective Tape
C6 1 6V-3138 Extension
D 2 418-3611 Track Block Reference: Refer to Tool Operating Manual, NEHS1087 for operating instructions for the 348-5430 Multi-Tool Gp.Note: Use Software License Card, NETG5049 with part number 348-5430 Multi-Tool Gp.Machine Preparation
Position the machine on level ground.
Stop the engine.
Install tooling (C) on the engine.
Place track block (D) in the left travel sprocket in order to block left forward travel. Place track block (D) in the right travel sprocket in order to block right forward travel. Test Procedure
Start the engine.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Read the engine speed display (rpm) on the multi-tool. Refer to Table 1 for the specifications for engine speed at the desired engine operation. Travel Procedure
Use the following procedure to check the desired engine speed for travel operation.
Start the engine.
Place the hydraulic activation control lever in the UNLOCK position.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Place the machine controls at the following settings: engine speed dial 10 and AEC switch OFF.
Place the travel speed control switch in HIGH position.
Move either travel lever to the full forward travel position and read the engine speed display (rpm) on the multi-tool. The engine speed should be 1650 50 rpm.
Return the travel lever to the NEUTRAL position.
Move both travel levers to the full forward travel position and hold for 10 seconds. Read the engine speed display (rpm) on the multi-tool. The engine speed should slowly increase to 1800 50 rpm.
Return the travel levers to the NEUTRAL position.