Detroit Diesel — Install Booster Servomotor On Engine
Installation
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- If the governor hunts when the engine is started, purge the governor of air
Procedure
- Mount the booster servomotor on the front engine lifter bracket with the oil cylinder head uppermost.
- Secure with four 5/16"-18 UNC bolts, nuts and lock washers and torque the nuts to 13 lb-ft (18 N-m).
- Reconnect the oil and air lines ensuring each line is connected to the appropriate fitting.
- Fill and check the oil level in the governor.
- Purge the booster servomotor of air by removing the air start lines at the air start motors and operating the air start valve three or four times.
- After all air is removed, adjust initial opening of the fuel racks with the limit screw (turn counterclockwise to increase starting fuel).
Specs & values
- 13 lb-ft (18 N-m) mounting nuts
Source: Detroit Diesel 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.