Case CX230D Crawler Excavator Service Manual

Table of Contents

1. Content
2. Introduction
3. Engine
4. Hydraulics System
5. Frames and Ballasting
6. Tracks and Track Suspension
7. Cab Climate Control
8. Electrical System
9. Booms, dippers and buckets
10. Platform, cab, bodywork and decals
11. Special Tools Index
12. Hydraulic Schematics
13. Electrical Schematics

Manual Extract: Idler gear – Inspect

1. Inspect the idle gear.
NOTE: Inspect the idle gears for tooth contact, peeling and pitching.

2. Measure the idle gear shaft (1) using the micrometer.
Specified value: 39.959 – 39.980 mm (1.573 1.574 in) Outside diameter of idle gear A Specified value: 29.959 – 29.980 mm (1.1795 1.1803 in) Outside diameter of idle gear shaft B and C

3. Measure the idle gear using the cylinder gauge.
NOTE: Measure the bush inner diameter of each idle gear.

4. Calculate the clearance from the measured value.
Specified value: 0.025 – 0.066 mm (0.001 0.003 in) Idle gear A
Specified value: 0.020 – 0.062 mm (0.0008 0.0024 in) Idle gear B and C

NOTE: The difference between the inner diameter of the idle gear bush and the outer diameter of the idle gear shaft is the clearance.