Norton Commando Workshop Manual

## Engine/Primary Transmission

# C

### SECTION C32

### RE-ASSEMBLY OF CRANKCASE
ASSEMBLY TO FRAME

Re-assembly of the crankcase into the frame is virtually a reversal of the dismantling procedure though the operation of fitting the front mounting is given complete as below:
1 | With the crankcase attached to the rear engine mounting plates, lift the crankcase assembly and gearbox, pivoting on the rear mounting to insert the bottom studs from right to left. The direction of fitting this stud is important only on 1970 models.
It is necessary to fit the front mounting at this stage before final tightening of all the engine plate to crankcase bolts and before fitting the inner chaincase. Attention to the front mounting and shimming has already been carried out on the bench as in Section F15.
2 | Take the front mounting and slide the bottom mounting to crankcase stud into position.

3 | Using the bottom stud as the pivot, lift the mounting into position on the crankcase bosses as in Fig. C38.
4 | Grease the mounting cap and shims and assemble each group of polyurethane washers, spacers and gaiters ready for insertion in sets between the front mounting tube and frame.
5 | Insert the right set first then place the washer for the mounting front bolt against the frame, aligning the mounting centre bolt head with the timing case and inserting the centre bolt through to the left hand side just short of the Isolastic bush. Note that it may be necessary to lift the crankcases a little to ease fitting of this bolt.
6 | As in Fig. C39 insert the left set of gaiter, mounting cap, shims, etc., and again, by lifting the crankcase for improved hole alignment, slide the centre bolt fully home.
7 | Use a small screwdriver with care to feed the lip of the gaiter over the shim cap at both ends of the mounting, revolving the gaiter a little to facilitate this operation.

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