jcb 4DX - Steering and Control Systems; Steering System Operation; Control Lever Functions; Loader and Excavator Control Patterns

15 - Engine
42 - Rocker and Fittings
00 - General
15 - 156 9823/0000-1 15 - 156
Technical Data
(For: JCB Tier 2/3 Mech Engine 4 Cyl)
Table 59. Rocker Levers, Rocker Shafts and Tappets Data
Valve tip clearances (measured cold):
Inlet: 0.19–0.27mm- SA, SB, SC
Exhaust: 0.56–0.64mm
Inlet: 0.35mm- SD, SF
Exhaust: 0.56–0.64mm
Rocker lever bore diameter
- min 26.046mm
- max 26.129mm
Rocker shaft diameter
- min 26mm
- max 26.021mm
Tappets stem diameter
- min 19.987mm
- max 19.975mm
Tappet bore diameter
- min 20mm
- max 20.021mm
Tappet height (maximum) 55.25mm