8–1 SPECIFICATIONS a 8–1.1 Cylinder Block Camshaft Bore Dia. No. 1 . . . . . . . . . . . . 1.794/1.7955 in. (45,568/45,606 mm) Camshaft Bore Dia. No. 2 . . . . . . . . . . . . . 1.784/1,787 . in. (45,314/45,390 mm) Camshaft Bore Dia. No. 3 . . . . . . . . . . . . . 1.776/1.778 . in. (45,110/45,161 mm) 8–1.2 Cylinder Liner (Cast Iron) Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dry . . . – Interference Fit Interference Fit of Liner . . . . . . . . . . . . . . . . . 0.003/0.005 . in. (0,076/0,127 mm) Inside Dia. of Liner after Finish Boring and Honing . . . . . . . . . . . . 3.125/3.126 . in. (79,375/79,400 mm) Height of Liner in Relation to Cylinder Block Top Face . . . . . . . . . . . . . . . . . . . . 0.023/0.027 . in. (0,584/0,686 mm) ABOVE
Piston Height in Relation to Cylinder Block Top Face . . . . . . . . 0.002/0.006 in. (0,051/0,152 mm) ABOVE Bore Dia. for Piston Pin . . . . . . . . . . . 1.96255/1.96275 in. (26,989/26,994 mm) Compression Ring Groove Width – Top . . . . . . . . . . . . . . . . . . . . . . . 0.0805/0.0815 .. in. (2,045/2,070 mm) Compression Ring Groove Width – Second . . . . . . . . . . . . . . . . . . . . .0.0645/0.0655 . in. (1,638/1,664 mm) Compression Ring Groove Width – Third . . . . . . . . . . . . . . . . . . . . . . 0.0645/0.0655 .. in. (1,638/1,664 mm) Oil Control Ring Groove Width – Fourth . . . . . . . . . . . . . . . . . . . . . . .0.126/0.127 . in. (3,200/3,225 mm) Oil Control Ring Groove Width – Fifth . . . . . . . . . . . . . . . . . . . . . . . . 0.190/0.191 .. in. (4,826/4,851 mm) NOTE: There is a 0.030 in. (0,762 mm) x 0.148/0.152 in. (3,759/3,861 mm) steel insert fitted into the top groove and located immediately above the top compression ring. Do not remove this insert. 8–1.4 Piston Rings Top Compression Ring Width . . . . . . . . . . 0.0771–0.0781 in. (1,958/1,984 mm) Ring Clearance in Groove . . . . . . . . . . . . . 0.0024/0.0044 . in. (0,051/0,102 mm) Second and Third Compression Ring Width 0.0615/0 .0625 in. (1,562/1,587 mm) Ring Clearance in Groove . . . . . . . . . . . . . . . 0.002/0.004 . in. (0,051/0,102 mm) Fifth Scraper Ring Width . . . . . . . . . . . . . . 0.1865/0.1875 . in. (4,737/4,762 mm) Ring Clearance in Groove . . . . . . . . . . . . . 0.0025/0.0045 . in. (0,063/0,114 mm) Ring Gap – (Cast Iron) . . . . . . . . . . . . . . . . . . . . 0.009/0.020 . in. (0,23/0,51 mm) (Chrome) . . . . . . . . . . . . . . . . . . . . .0.012/0.023 . in. (0,31/0,59 mm)
Dealer Copy -- Not for Resale
8–1.3 Pistons
The above ring gap is for a bore diameter of 3.125 in. (79,38 mm). Where the bore diameter is greater than this, the ring gap will be greater and for every 0.001 in. (0,03 mm) increase to the above bore diameter , 0.003 in. (0,08 mm) should be added to the quoted ring gap. 8–1.4 Piston Pin Bushing Length of Bushing . . . . . . . . . . . . . . . . . . . .0.935/0.955 . in. (23,749/24,257 mm) Outside Diameter of Bushing . . . . . . . . . . . .1.221/1.222 in. (31,013/31,039 mm) Inside Diameter Before Reaming . . . . . 1.0495/1.0545 in. (26,657/26,784 mm) Inside Diameter After Reaming . . . . . . 1.06315/1.0632 in. (27,004/27,005 mm) Clearance Between Bushing Piston Pin . . . . . . . . . . . . . . . . . . . . . . 0.00045/0,0007 . in. (0,0114/0,0178 mm) 8–1.5 Connecting Rod Big End Bore Diameter . . . . . . . . . . . . . . . 2.146/2.1465 in. (54,508/54,521 mm) Small End Bore Diameter . . . . . . . . . . 1.21875/1.21975 in. (30,956/30,981 mm) Connecting Rod Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.375 .. in. (3/8 in.) U.N.F. Connecting Rod End Float . . . . . . . . . . . . . 0.0065/0.0105 . in. (0,165/0,267 mm)
145 of Feb. 178 82 Revised
–8–1–
825 Loader Service Manual
