MTU Detroit Diesel 183 Series Technical Publication page 191

Task Description
20080/1 E 98-12
Push associated piston pin (2) into piston and conrod
(arrow) until seated against snap ring installed
beforehand.
Caution!
Snap ring pretension. Risk of injury!
Use correct circlip pliers.
Wear protective goggles/safety mask.
Using snap ring pliers, insert second snap ring.
Note
Make sure snap ring is perfectly seated in groove! Snap
ring must sit securely in the groove.
Group 03
Subgroup 7004
Page 11