Product Description
Bush - 1G2295
Fits MGA, MGB,1500cc and 1800cc BMC diesel engines, 1622cc petrol engines, Nuffield 4/25 Leyland 154, 184, 235, 302 Marshall 302 and Thornycroft 90 and 108 boat engines.
Alternative part no. 12H2197.
8 required per engine.
Will require the old bush to be removed with tool 18G226. The replacement bush must be pressed in with the butt joint to the top of the rocker bore and the oil groove in the bush at the bottom of the rocker bore.
It will be necessary to drill the oil holes in the bush to coincide with the oilways in the rocker. The oil hole to the adjuster end can be drilled before the bush is fitted, extra care being taken to keep the holes of the bush and the rocker in line during the pressing in operation.
If the holes are drilled after fitting the following procedure must be adopted. Remove the adjuster screw and use a .093 in.(2.36mm) drill to drill out the end plug and continue the oilway through the bush. Replug the end after this operation with a rivet (Part No. 5C2436) and weld the plug into position. The oil hole in the top of the rocker barrel must be continued through the bush with a no. 47 drill .0785 in. (1.98mm).
Finally burnish-ream the bush to size .625 to .626 in. (15.8 to 15.9mm).