AGCO Sisu 320, 420, 620, 634 Engine Repair Manual PDF

Model: AGCO SISU 320D, 320DS, 420D, 420DS, 420DW, 420DWI, 620D, 620DS, 634DS
Type: Workshop Repair Manual
AGCO Sisu 320D, 320DS, 420D, 420DS, 420DW, 420DWI, 620D, 620DS, 634DS Engines Service Repair Manual- 114 Pages
Model: AGCO SISU 320D, 320DS, 420D, 420DS, 420DW, 420DWI, 620D, 620DS, 634DS Engines
Type: Workshop Service Manual
AGCO Sisu 320D, 320DS, 420D, 420DS, 420DW, 420DWI, 620D, 620DS, 634DS Engines Service Manual- 114 Pages

This Workshop Manual is intended to facilitate workshop operations and repair work for the AGCO SISU 320, 420, 620 and 634 engines are mainly the same in construction, so the same repair instructions usually apply to different engine types. The differences between the various engine types which affect repair work have been mentioned in technical data and repair instructions. All measurements are in millimetres and valid when the temperature of the parts is +20 C, unless otherwise stated.

Before starting the repair work read the safety instructions in the beginning of this book. Make sure that you have all necessary
tools, parts and accessories at your disposal. The special tools mentioned in the work instructions are not all essential, but they
speed up and facilitate the work and contribute to successful execution of work. An engine which has undergone repairs must
be run in just like a new one.
AGCO Sisu Engine type 320D, 320DS, 420D, 420DS, 420DW, 420DWI, 620D, 620DS, 634DS
320 and 420 engines have one cylinder head. 620/634 engines have two cylinder heads which are exchangeable

with each other and also with the cylinder head on the 320—engine. Each cylinder has its own inlet and exhaust ports located on either side of the head.Between hotexhaust valves a cool inlet valve is fitted to balance the thermal load.