WEICHAI WP10.270 - Page 14

Operation and Maintenance Manual forWP10 Series Four-valve Diesel Engine (China IV, V)
8
No.
Name
Color
Function and application
1
Molykote Pulver
(fine molybdenum powder)
Black
Applied on flat and smooth metal surfaces to prevent seizing
For instance: Applied onto outer surface of cylinder liner
2
Molykote G-N plus
(Molybdenum disulfide, oil
solution)
Dark grey
Achieve lubrication function before lubricating oil pressure is
built up
For instance: Applied onto intake valve stem
Table 3-7Application of sealant for diesel engine
Grade
Major application
Application part
Supplements
Loctite 242
Applied onto the threads to
prevent looseness due to
vibration, with moderate
strength.
Flywheel housing bolt
Camshaft thrust plate bolt
Camshaft timing gear bolt
Intermediate idler gear bolt
Front end cover bolt
Oil filter head bolt
Oil cooler bolt
Screw plug of engine oil cooler regulator
valve
Bolt of oil pump return pipe fixing device
Air compressor shaft end thread
Strainer bolt
Bolt of sensor and harness fixing device
Alternatively,
DriLoc204
thread-locking
adhesive can be
used for
pre-coating
Loctite262
Applied onto the external
threads for locking, sealing,
preventing vibration from
causing looseness
Cylinder head secondary bolt
Loctite271
Locking and tightening
Bowl-shape plug for oil hole
Loctite277
For sealing between core and
hole
Other bowl-shape plugs
Loctite270
For sealing of cylinder head top
surface
Push rod tube - cylinder head