Crankshaft; Connecting Rods; Cylinder Block; Pistons - Yale GDP16-20AF Maintenance Manual

600 YRM 496

CRANKSHAFT

Distortion FE........................ less than 0.03 mm
Distortion F2 ........................ less than 0.04 mm
Main Bearing Journal
Diameter .............................. 59.937 to 59.955 mm
– Service Limit ................ 0.05 mm (0.002 in.)
– Grinding Limit ............... 0.75 mm (0.030 in.)
Clearance Between Journals
and Main Bearings ..............
– Service Limit ................ 0.08 mm (0.003 in.)
Connecting Rod Journal
Diameter .............................. 50.940 to 50.955 mm
– Service Limit ................ 0.05 mm (0.002 in.)
– Grinding Limit ............... 0.75 mm (0.030 in.)
Thrust Bearing
Clearance ............................ 0.08 to 0.18 mm
– Service Limit ................ 0.30 mm (0.012 in.)

CONNECTING RODS

Small End Bore.................... 21.943 to 21.961 mm
Clearance Between
Piston Pin and
Bore ..................................... 0.015 to 0.040 mm
Clearance Between
Crankshaft Journals and
Rod Bearings....................... 0.027 to 0.067 mm
– Service Limit ................ 0.10 mm (0.004 in.)

CYLINDER BLOCK

Distortion at Top Surface ..... 0.15 mm (0.0059 in.)
Bore Diameter ..................... 86.00 to 86.019 mm
– Wear Limit .................... 0.15 mm (0.0059 in.)
(0.0012 in.)
(0.0016 in.)
(2.3597 to 2.3604 in.)
0.031 to 0.049 mm
(0.0012 to 0.0019 in.)
(2.0055 to 2.0061 in.)
(0.003 to 0.007 in.)
(0.8639 to 0.8646 in.)
(0.0006 to 0.0016 in.)
(0.0011 to 0.0026 in.)
(3.3858 to 3.3866 in.)

PISTONS

Diameter .............................. 85.944 to 85.964 mm
Clearance Between
Piston and Bore ................... 0.036 to 0.075 mm
– Service Limit ................ 0.15 mm (0.0059 in.)
Piston Pin Diameter............. 21.974 to 21.980 mm
Groove Width for Piston
Rings Nos. 1 and 2.............. 1.520 to 1.540 mm
Groove Width for
Oil Ring................................ 4.020 to 4.040 mm
Piston Ring Clearance in
Groove (Nos. 1 and 2)......... 0.03 to 0.07 mm
– Service Limit ................ 0.15 mm (0.0059 in.)
Piston Ring End Clearance:
– Top Ring ....................... 0.20 to 0.35 mm
– Second Ring................. 0.15 to 0.30 mm
– Oil Control Ring............ 0.30 to 0.90 mm
– Service Limit
(All Rings)........................ 1.0 mm (0.039 in.)

OIL PUMP

Clearance Between
Inner Gear and Crescent ..... 0.267 to 0.380 mm
– Service Limit ................ 0.40 mm (0.0157 in.)
Clearance Between
Crescent and Outer Gear .... 0.20 to 0.32 mm
– Service Limit ................ 0.35 mm (0.014 in.)
Clearance Between Outer
Gear and Housing ............... 0.090 to 0.184 mm
– Service Limit ................ 0.20 mm (0.008 in.)
Engine Specifications
(3.3836 to 3.3844 in.)
(0.0014 to 0.0030 in.)
(0.8651 to 0.8654 in.)
(0.0598 to 0.0606 in.)
(0.1583 to 0.1591 in.)
(0.0012 to 0.0028 in.)
(0.008 to 0.014 in.)
(0.006 to 0.012 in.)
(0.012 to 0.035 in.)
(0.0105 to 0.0150 in.)
(0.008 to 0.013 in.)
(0.0035 to 0.0072 in.)
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