Wisconsin — Cylinder Head Removal
Repair & overhaul
From a Wisconsin service manual covering: V-460D, V-461D, V-465D, V460D, V461D, V465, VH4, W4-1770, vg4d. Check it applies to your exact model before use.
Applies to: Wisconsin VH4
Before you start
- Do not drive push rod tubes in place with a hammer.
Procedure
- Remove rocker arm cover by means of a screw driver wedged under the bail wire.
- Take off the 4 nuts and washers from cylinder barrel studs.
- Lift cylinder head and rocker arm assembly off cylinder. The oil drain line will slip out of adapter in crankcase.
- Pull out push rods and rod housings.
- On reassembly place a new 'O' ring under collar of push rod housing and press collar end of tube into tappet hole by hand. Use new 'O' ring for push rod housing to recess in cylinder head.
- Spread a light film of grease on cylinder head gasket so it will stick in place. Place new 'O' ring on oil drain tube.
- Square up the inlet and exhaust port flanges with those of the manifold using a parallel steel bar; tap heads lightly with a rubber mallet.
- Torque cylinder head nuts alternately and in 3 steps: first 10, then 20, and finally 30 foot pounds torque.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cylinder head nuts 10, 20, 30 foot pounds in 3 steps
Source: Wisconsin 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.