Suburban 1/2 Ton 2WD V8-379 6.2L DSL (1986)
Diesel MFI Pump: Service and Repair
Injection Pump Replace
Fig. 29 Front cover to injection pump timing mark
When installing injection pump on California models, ensure half circles align to form a complete circle. Any deviation in timing will result in the two
half circles not matching. If a new injection pump is being installed, use the conventional timing marks, Fig. 29.
Fig. 30 Injection pump drive gear bolt removal
EXC. VAN
Removal
1.
Disconnect batteries and remove fan and fan shroud.
2.
Remove intake manifold and fuel lines.
3.
Disconnect accelerator cable at injection pump. On models equipped with 700-4R auto. trans. also disconnect detent cable.
4.
Disconnect fuel return line and remove wires and hoses from injection pump.
5.
Remove fuel line from pump.
6.
Remove A/C hose retainer bracket, if equipped.
7.
Remove oil fill tube and PCV or CDRV vent hose assembly.
8.
Scribe a mark on front cover and pump for alignment at reinstallation.
9.
Rotate engine, as needed, to gain access to pump drive gear retaining bolts through oil filler opening, Fig. 30, then remove bolts.
10.
Remove front cover to injection pump attaching nuts and remove pump. Cap all open lines and nozzles.
