Caterpillar — Brake Housing Installation
Installation · Engine brake housing (FRONT / REAR)
From a Caterpillar service manual — check it applies to your exact model before use.
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Before you start
- Ensure the 7/16 NF support bracket nuts and washers are not in contact with the housing before torquing.
- Fuel lines must not come in contact with any part of the engine or engine brake components.
Procedure
- Note each housing is designated FRONT or REAR on the distributor body.
- Install and lubricate the oil supply adapter o-ring; lubricate the housing oil supply adapter bore.
- Install the front housing over the studs and oil supply adapter, keeping the housing level.
- Ensure the housing is fully down and the location pin has engaged the milled locating groove.
- Install the 3/4 NF nuts with the remaining Pacbrake washers on the housing holddown studs.
- Torque the holddown nuts in two steps to 50 lb.ft. (70 N.m), then to 100 lb.ft. (140 N.m).
- Repeat on the rear of the engine.
- Turn the support bracket nuts with washers up under the housings; install upper washers and nuts and torque to 50 lb.ft. (70 N.m).
Tools required
- torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 50 lb.ft. (70 N.m)
- 100 lb.ft. (140 N.m)
Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.