Service Manual

Tightening Torques
The Mitsubishi 3G83 engine has many bolts and caps- gine. The torque specifications in American Standard
crews of special materials and sizes. It is very important and Metric as listed below MUST be followed in order to
that special care be used to replace all bolts and caps- have the assembled engine conform to the original
crews in their proper location during assembly of the en- specifications.
Item Nm (ft–lb)
Engine
Timing belt
Crankshaft bolt 135 – 145 (98 – 105)
Crankshaft pulley bolt 15 – 18 (11 – 13)
Timing belt cover bolt 10 – 12 (7 – 9)
Camshaft sprocket bolt 80 – 100 (58 – 72)
Oil pump sprocket nut 50 – 57 (36 – 41)
Timing belt tensioner nut 22 – 30 (16 – 22)
Timing belt rear cover bolt 10 – 12 (7 – 9)
Rocker arm, rocker shaft and camshaft
Rocker cover bolt 5 – 7 (4 – 5)
Rocker shaft bolt 29 – 35 (21 – 25)
Camshaft thrust plate bolt 10 – 12 (7 – 9)
Rocker arm adjusting nut 8 – 10 (6 – 7)
Cylinder head and valves
Cylinder head bolt 60 – 70 (43 – 51)
Front case, counterbalance shaft and oil pan
Front case bolt 8 – 10 (6 – 7)
Oil pump cover bolt 8 – 10 (6 – 7)
Oil pan bolt 10 – 12 (7 – 9)
Oil drain plug 35 – 45 (25 – 33)
Oil screen bolt 15 – 22 (11 – 16)
Oil pump driven gear bolt 34 – 40 (25 – 29)
Rear cover bolt 10 – 12 (7 – 9)
Piston and connecting rod
Connecting rod cap nut 20 – 23 (14 – 17)
Crankshaft and flywheel
Flywheel bolt 70 – 80 (51 – 58)
Rear plate bolt 8 – 12 (6 – 9)
Bell housing cover bolt 8 – 12 (6 – 9)
Oil seal case bolt 10 – 12 (7 – 9)
Bearing cap bolt 50 – 55 (36 – 40)
Cylinder block
Taper plug 1/16 8 – 12 (6 – 9)
Taper plug 1/8 15 – 22 (11 – 16)
Water drain plug 35 – 45 (25 – 33)
Taper plug PT–1/4 35 – 45 (25 – 33)
Fuel system
Carburetor assembly 15 – 20 (11 – 14)
Lubrication system
Oil screen 15 – 22 (11 – 15)
Oil filter 12 – 16 (9 – 12)
Oil filter bracket (cylinder block side) 19 – 28 (14 – 20)
Oil filter bracket (bracket A side) 9 – 14 (7 – 10)
Oil pressure switch 15 – 22 (11 – 16)
Oil pump cover 8 – 10 (6 – 7)
Oil pump driven gear bolt 34 – 40 (24 – 29)
Liquid Cooled Gas Engine
Page 3 – 10
Workman 3000/4000 Series