Detroit Diesel — Time Fuel Injector
Adjustments
From a Detroit Diesel operator's manual — check it applies to your exact model before use.
Before you start
- Do not turn crankshaft in left-hand direction with wrench on front bolt.
Procedure
- Place speed control lever in idle position; secure stop lever in no-fuel position.
- Rotate crankshaft until exhaust valves are fully depressed on cylinder.
- Place small end of injector timing gage in hole in top of injector body.
- Loosen push rod lock nut.
- Turn push rod until extended part of gage just passes over injector follower.
- Hold push rod and tighten lock nut.
- Recheck adjustment and readjust if necessary.
- Repeat for remaining injectors.
Tools required
- Injector timing gage J 1853 or J 1242 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- J 1853 1.460 inch standard; J 1242 1.484 inch advanced
Source: Detroit Diesel operator's 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.