SUPPORT GP-ENGINE 8N2020 - Caterpillar

39. Install the O-ring seals on three plugs (55).40. Install three plugs (55) in valve group (56). Tighten the plugs to a torque of 16 2 N m (12 1 lb.ft.).41. Install O-ring seals (53). Install back-up rings (57) on each side of the O-ring seals.42. Install O-ring seal (54) on the valve group.43. Install valve group (58) in tilt and attachment valve group (56). Tighten the valve group to a torque of 30 3 N m (22 2 lb.ft.). 44. Install O-ring seal (62) and back-up ring (63) on sleeve (59).45. Put washer (60) and spring (61) in position in sleeve (59). 46. Install the O-ring seal and plug (65) in valve (64) if it