0388672 PISTON,.020,115 HP JOHNSON
100ML79S, 115EL77S, 115ETZ78C, 115ML79R, 115TXL77S, 140ML77S, 140ML78C, 140ML79R, 150TL78S, 175TL77S, 175TL78C, 200TL77C, 200TL78R, 235TL78R, 85EL77S, 85ETLR78C, 85ML79R, 85TXLR77S
PISTON
Price: query
Rating:
Compatible models:
BRP JOHNSON entire parts catalog list:
- CRANKSHAFT AND PISTON » 0388672
115ETZ78C, 115ML78C, 115TXL78C 1978
115ML79R, 115TL79R, 115TXL79R 1979
115TXL77S 1977
140ML77S, 140TL77S, 140TXL77S 1977
140ML78C, 140TL78C, 140TX78C 1978
140ML79R, 140TL79R, 140TXL79R 1979
150TL78S, 150TXL78S 1978
175TL77S, 175TXL77S 1977
175TL78C, 175TX78C 1978
200TL77C, 200TXL77C 1977
200TL78R, 200TX78R 1978
235TL78R, 235TX78R 1978
85EL77S, 85ETLR77S 1977
85ETLR78C, 85ML78C, 85TXLR78C 1978
85ML79R, 85TL79R, 85TXL79R 1979
85TXLR77S 1977
Information:
Specifications
Table 1
    Inlet Valves     Exhaust Valves    
Valve Lash (Stopped Engine)     0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
TC Compression Stroke     1 and 2     1 and 3    
TC Exhaust Stroke (1)     3 and 4     2 and 4    
Firing Order     1,3,4,2 (2)    
( 1 ) 360° from TC compression stroke
( 2 ) The No. 1 cylinder is at the front of the engine.
Table 2
TC Compression Stroke     Inlet Valves     Exhaust Valves    
Valve Lash    
0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
Cylinders     1 and 2     1 and 3    
Table 3
TC Exhaust Stroke (3)     Inlet Valves     Exhaust Valve    
Valve Lash    
0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
Cylinders     3 and 4     2 and 4    
( 3 ) Position for No. 1 cylinder
Table 4
Torque for Adjustment Locknut    
27 N m (20 lb ft)    Introduction
Refer to Specifications, "Engine Design" for the location of the cylinder valves.If the valve lash requires adjustment several times in a short period of time, excessive wear exists in a different part of the engine. Find the problem and make necessary repairs in order to prevent more damage to the engine.Not enough valve lash can be the cause of rapid wear of the camshaft and valve lifters. Not enough valve lash can indicate that the seats for the valves are worn.Valves become worn due to the following causes:
Fuel injection nozzles that operate incorrectly
Excessive dirt and oil are present on the filters for the inlet air.
Incorrect fuel settings on the fuel injection pump.
The load capacity of the engine is frequently exceeded.Too much valve lash can cause broken valve stems, springs, and spring retainers. Too much valve lash can be an indication of the following problems:
Worn camshaft and valve lifters
Worn rocker arms
Bent pushrods
Broken socket on the upper end of a pushrod
Loose adjustment screw for the valve lashIf the camshaft and valve lifters show rapid wear, look for fuel in the lubrication oil or dirty lubrication oil as a possible cause.Check Procedure
Valve Lash Check
An adjustment is NOT NECESSARY if the measurement of the valve lash is in the acceptable range. Check the valve lash while the engine is stopped. The temperature of the engine does not change the valve lash setting.
Table 5
   Inlet Valves    Exhaust Valves    
Valve Lash (Stopped Engine)    
0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
TC Compression Stroke     1 and 2     1 and 3    
TC Exhaust Stroke (1)     3 and 4     2 and 4    
Firing Order     1,3,4,2 (2)    
( 1 ) 360° from TC compression stroke
( 2 ) The No. 1 cylinder is at the front of the engine.If the measurement is not within the acceptable clearance, adjustment is necessary.Adjustment Procedure
Valve Lash Adjustment
Note: The No. 1 cylinder is at the front of the engine.
Illustration 1 g00323903
Setting the valve lash (1) Adjustment screw (2) Feeler gauge
Table 1
    Inlet Valves     Exhaust Valves    
Valve Lash (Stopped Engine)     0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
TC Compression Stroke     1 and 2     1 and 3    
TC Exhaust Stroke (1)     3 and 4     2 and 4    
Firing Order     1,3,4,2 (2)    
( 1 ) 360° from TC compression stroke
( 2 ) The No. 1 cylinder is at the front of the engine.
Table 2
TC Compression Stroke     Inlet Valves     Exhaust Valves    
Valve Lash    
0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
Cylinders     1 and 2     1 and 3    
Table 3
TC Exhaust Stroke (3)     Inlet Valves     Exhaust Valve    
Valve Lash    
0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
Cylinders     3 and 4     2 and 4    
( 3 ) Position for No. 1 cylinder
Table 4
Torque for Adjustment Locknut    
27 N m (20 lb ft)    Introduction
Refer to Specifications, "Engine Design" for the location of the cylinder valves.If the valve lash requires adjustment several times in a short period of time, excessive wear exists in a different part of the engine. Find the problem and make necessary repairs in order to prevent more damage to the engine.Not enough valve lash can be the cause of rapid wear of the camshaft and valve lifters. Not enough valve lash can indicate that the seats for the valves are worn.Valves become worn due to the following causes:
Fuel injection nozzles that operate incorrectly
Excessive dirt and oil are present on the filters for the inlet air.
Incorrect fuel settings on the fuel injection pump.
The load capacity of the engine is frequently exceeded.Too much valve lash can cause broken valve stems, springs, and spring retainers. Too much valve lash can be an indication of the following problems:
Worn camshaft and valve lifters
Worn rocker arms
Bent pushrods
Broken socket on the upper end of a pushrod
Loose adjustment screw for the valve lashIf the camshaft and valve lifters show rapid wear, look for fuel in the lubrication oil or dirty lubrication oil as a possible cause.Check Procedure
Valve Lash Check
An adjustment is NOT NECESSARY if the measurement of the valve lash is in the acceptable range. Check the valve lash while the engine is stopped. The temperature of the engine does not change the valve lash setting.
Table 5
   Inlet Valves    Exhaust Valves    
Valve Lash (Stopped Engine)    
0.20 mm (0.008 inch)    
0.45 mm (0.018 inch)    
TC Compression Stroke     1 and 2     1 and 3    
TC Exhaust Stroke (1)     3 and 4     2 and 4    
Firing Order     1,3,4,2 (2)    
( 1 ) 360° from TC compression stroke
( 2 ) The No. 1 cylinder is at the front of the engine.If the measurement is not within the acceptable clearance, adjustment is necessary.Adjustment Procedure
Valve Lash Adjustment
Note: The No. 1 cylinder is at the front of the engine.
Illustration 1 g00323903
Setting the valve lash (1) Adjustment screw (2) Feeler gauge
Parts piston JOHNSON:
0320137
0320137 PISTON,Shift assy.
115EL77S, 115ESL75E, 115TXL77S, 140ML77S, 150TL78S, 175TL77S, 175TL78C, 200TL76S, 200TL77C, 200TL78R, 235TL78R, 85EL76D, 85EL77S, 85ESL75E, 85TXLR77S
0321239
0321239 PISTON,Letdown control
100ML79S, 115ETZ78C, 115ML79R, 115TXL77S, 140ML77S, 140ML78C, 140ML79R, 150TL78S, 150TL79C, 175TL77S, 175TL78C, 175TL79R, 200TL76S, 200TL77C, 200TL78R, 200TL79A, 235TL70A, 235TL78R, 85ETLR78C, 85ML79R, 85TXLR77S, CJ275TLCDC, CJ275TLCOS, CJ300TLCDC, C
0388671
0388671 PISTON,Std.,115 HP
100ML79S, 115EL77S, 115ETZ78C, 115ML79R, 115TXL77S, 140ML77S, 140ML78C, 140ML79R, 150TL78S, 175TL77S, 175TL78C, 200TL77C, 200TL78R, 235TL78R, 85EL77S, 85ETLR78C, 85ML79R, 85TXLR77S
0388315
0388315 PISTON, .030 O.S., 85 HP
115EL77S, 115ETZ78C, 115TXL77S, 140ML77S, 140ML78C, 85EL77S, 85ETLR78C, 85TXLR77S
0388673
0388673 PISTON,.030,115 HP
100ML79S, 115EL77S, 115ETZ78C, 115ML79R, 115TXL77S, 140ML77S, 140ML78C, 140ML79R, 150TL78S, 175TL77S, 175TL78C, 200TL77C, 200TL78R, 235TL78R, 85EL77S, 85ETLR78C, 85ML79R, 85TXLR77S
0388312
0388312 PISTON,Std.,85 HP
115EL77S, 115ETZ78C, 115TXL77S, 140ML77S, 140ML78C, 85EL77S, 85ETLR78C, 85TXLR77S
0390000
0390000 PISTON ASSY
100ML79S, 115ETZ78C, 115ML79R, 140ML78C, 140ML79R, 150TL78S, 150TL79C, 175TL78C, 175TL79R, 200TL78R, 200TL79A, 235TL70A, 235TL78R, 85ETLR78C, 85ML79R, D100WTLM, J100MLCSC, J100STLCCA, J100STLESB, J100WMLCDR, J100WMLCOC, J100WMLCRS, J100WTLCUA, J100WT
0323848
0323848 PISTON, Pump control
100ML79S, 115ETZ78C, 115ML79R, 140ML78C, 140ML79R, 150TL78S, 150TL79C, 175TL78C, 175TL79R, 200TL78R, 200TL79A, 235TL70A, 235TL78R, 85ETLR78C, 85ML79R, BJ250CXECB, BJ250CXEDA, BJ250CXEUM, CJ275TLCDC, CJ275TLCOS, CJ300TLCDC, CJ300TLCOS, D100WTLM, J100M