Cylinder Block, Liners, Pistons, and Rods
6081HRW Engines must be removed from 8100-8400
Tractors to service the pistons and connecting rods. Refer
to machine technical manual TM1575 (8100, 8200, 8300,
and 8400 Tractors--Repair) for engine removal
procedure. (For 8000T Tracks tractors, refer to TM1621.)
CAUTION: Do not drain engine coolant until it
cools below operating temperature. Then slowly
loosen water pump cover drain valve (A) and
block drain valve (B) to relieve any pressure.
Drain coolant and engine oil.
Water Pump Drain Valve
IMPORTANT: Both drain valves must be opened to
completely drain engine block.
1. Drain all engine coolant and engine oil.
NOTE: If engine is to be completely disassembled, see
ENGINE DISASSEMBLY SEQUENCE in Group
2. Remove cylinder head. (See REMOVE CYLINDER
HEAD in Group 05.)
3. Remove oil pan and oil pump. (See REMOVE ENGINE
Cylinder Block Drain Valve
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