Detroit Diesel — Remove Blower(s) From Engine
Repair & overhaul
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- On 12V and 16V engines, remove the rear blower first, slide the center drive shaft and tube connector from the front blower and then remove the front blower.
Procedure
- On non-turbocharged engines, loosen hose clamps and slide air inlet housing hoses back to disconnect from air cleaners. On turbocharged engines, disconnect and remove air inlet and outlet tubes.
- Remove the eight bolts, lock washers and plain washers securing the air inlet housing to the air shutdown housing. Remove the air inlet housing and gasket.
- Disconnect the wire cable from the air shutoff cam pin handle. On tandem installation, remove the shutdown linkage between the two air shutdown housings.
- Remove the engine ventilating system. Remove the 7/16 in bolts, lock washers and plain washers securing air shutdown housings to the lower cover plate; remove housings and gaskets.
- Remove the governor control housing, blower cover plate and gaskets. Remove the fuel pump from the flywheel housing.
- Remove the blower drive shaft from the blower drive gear hub assembly.
- Disconnect center drive shaft and tube connections on 12V and 16V tandem applications per steps.
- Remove the four bolts and washers securing each blower to the block. Attach a rope to the blower housing webbing and hoist the blower(s) from the cylinder block. Remove the oil seal rings in the cylin
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.