Toro Workman 3000 Series Service Manual page 215

8. Make sure that the cylinder head and cylinder block
surfaces are clean. Put a new gasket on the cylinder
head. Insert dowel pins into two cylinder head bolt holes
to assist in mounting the head onto the block. Carefully
put the cylinder head into position on the cylinder block.
Remove the dowel pins. Insert the cylinder head bolts.
IMPORTANT: Do not put any sealant on the cylinder
head gasket.
9. Tighten the cylinder head bolts in the order shown in
Figure 71. Tighten the bolts to approximately one-third
the specified torque, then two-thirds and finally to the
final specified torque.
M10 head bolt torque: 7.5 - 8.5 KgM (54 - 62 ft-lb)
M8 head bolt torque: 2.0 - 3.0 KgM (15 - 22 ft-lb)
10. Install the fuel return pipe. Install the fuel delivery
pipes. When tightening the nut on each end of the pipe
hold the delivery valve holder or nozzle holder with a
wrench to prevent turning.
11. Apply engine oil to the inside surface of the rocker
arm bushings. Install the rocker arms, spring and rocker
arm stays on the rocker shaft. Install the rocker shaft so
the identification mark (small drilled hole near the end
of the shaft) is at the front and facing the valve side.
Install the bolts through each stay and into the shaft.
Install the snap ring on each end of the shaft.
12. Install the rocker arm and shaft assembly on the
cylinder head. Tighten the rocker arm stay bolts to a
torque of 1.5 - 2.2 KgM (11 - 16 ft-lb)
13. Adjust the valve clearance. (See Checking and
Adjusting Valve Clearance in the Adjustments section of
this chapter.)
14. Install the rocker cover and gasket. Install the
breather hose to the rocker cover and intake manifold.
15. Install the glow plug lead wires.
16. Install the alternator.
17. Install the muffler.
18. Install the upper radiator hose and tighten the hose
clamps. Install the coolant bypass hose to the thermo­
stat housing and tighten the hose clamps.
19. Fill the cooling system with a 50/50 solution of
ethylene glycol antifreeze and clean, soft water. Check
for oil and coolant leaks and repair as necessary.
Workman 3300-D/4300-D Page 4 - 65
Figure 71
Liquid Cooled Diesel Engine