Service Manual for WD10 Diesel Engine
37
(6) Disconnect EVB oil pipe and pipe joint;
(7) Disconnect injector wiring harness, remove injector oil return pipe and high pressure fuel pipe,
refer to disassembly of fuel system for details;
(8) Remove the injector, refer to disassembly of fuel system for details;
(9) Remove cylinder cover shields and its gaskets;
(10) Remove rocker assembly and pushrod, refer to disassembly of valve mechanism for details;
(11) Remove cylinder cover assembly, and take down the gaskets;
Refer to the chart below to tighten the bolts, some tips:
1) Pre-tighten the main bolts to 200Nm according to the order and mark the bolts.
2) Pre-tighten the auxiliary nuts for 90° according to the order, and mark the new position of
the nuts.
3) Tighten the main bolts for further 90° according to the order , and mark the new position of
the bolts.
4) Tighten the auxiliary nuts for another 90° according to the order, and the tightening torque
should get to 120~160Nm.
5) Tighten the main bolts for another 90° according to the order, and the tightening torque
should get to 240~340Nm.
(12) Remove inner and outer springs of intake and exhaust valves, and then take out the spring seats,
valve collets and valves, refer to disassembly of valve mechanism for details;
(13) Remove valve rod seal cartridges.
4213 Steps to Assemble Cylinder Cover Attachments
Assembling steps are contrary to disassembling ones.
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