Komatsu GALEO BR550JG-1, Operation & Maintenance Manual

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MAINTENANCE
SERVICE PROCEDURE
REPLACEMENT OF CHEEK PLATE
1. Take a special tool for hanging the cheek plate (Accessory
Tool No. 16) out of the tool box.
2. Remove the cheek plate upper guard, using this special tool.
[Cheek plate upper guard weight: 31.4 kg (69 lb)]
3. Remove soils, sand, etc. from the hanging hole of the upper
cheek plate with compressed air or a wire brush, then lift up the
upper cheek plate with the special tool.
[Upper cheek plate weight: 106.0 kg (234 lb)]
4. Remove soils, sand, etc. from the hanging hole of the lower
cheek plate with compressed air or a wire brush, then lift up the
lower cheek plate with the special tool.
[lower cheek plate weight: 72.0 kg (159 lb)]
5. After removing all the cheek plates, completely remove the soil
and sand from the cheek plate fitting surfaces (front, rear, right
and left).
In particular, remove the soil and sand clogging both sides of
the fixed jaw.
6. Insert new cheek plates in order from the underside along the
fixed jaw and a guide of the side frame.
7. Tighten the bolts securing the cheek plates and cheek plate
upper guard.
(1) For cheek plate: M24 x 3 bolts (on one side)
(2) For cheek plate upper guard: M24 x 4 bolts (on one side)
4 - 45
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