Nanni N4.40, Workshop Manual

Page: 63 / 175

ENGINE
03-M-E3B, 03-M-DI-E3B, 03-M-E3BG, WSM
1-M1
1. ENGINE BODY
[1] PISTON
The piston skirt has a layer of molybdenum
disulfide , which decreases the piston slap noise and
thus the all the engine noise.
Molybdenum disulfide (MoS
2
)
The molybdenum disulfide (1) is a solid lubricant, like
Graphite or Teflon. This material helps not to wear the
metal even with little lube oil.
M00000003ENM0001US1
(1) Molybdenum Disulfide [A] D1503-M, D1703-M,
D1803-M, V2003-M,
V2203-M, V2403-M,
V2403-M-T, D1703-M-BG,
V2003-M-BG,
V2003-M-T-BG,
V2203-M-BG, V2403-M-BG
[B] D1803-M-DI, V2403-M-DI,
V2403-M-DI-T
KiSC issued 06, 2009 A