Perkins 4.108 Workshop Manual page 18

TECHNICAL DATA-B.B
Valve Guides (Exhaust) 4.10B, 4.107, 4.99
Inside Dia.
Outside Dia.
Interference fit of Guide in Cylinder Head Bore
Depth of Counterbore
Overall Length of Guide '"
Guide Protrusion above Top Face of Cylinder Head
Valves (Inlet) 4.10B, 4,107, 4.99
Valve Stem Dia.
Clearance fit of Valve Stem in Guide
Valve Head Dia.
Valve Face Angle
Valve Head Depth Below Cylinder Head Face
Overall Length of Valve
Sealing Arrangement
Valve (Exhaust) 4.108,4.107,4.99
Valve Stem Dia.
Clearance Fit of Valve Stem in Guide
Valve Head Dia.
Valve Face Angle
Valve Head Depth Below Cylinder Head Face
Overall Length of Valve
Sealing Arrangement
Inner Valve Springs (where fitted)
Fitted Length
Load at Fitted Length
Fitted Position
Outer Valve Springs
Fitted Length
Load at Fitted Length
Fitted Position
4.10B, 4.107, 4.99
Rockel' level's 4.108, 4.107, 4.99
Length between Centre Line of Adjusting Screw and
Centre Line of Rocker Shaft
Length between Centre Line of Rocker Lever Pad and
Centre Line of Rocker Shaft
Inside Dia. of Rocker Lever Bore
Outside Dia. of Rocker Lever Bush
Interference Fit of Bush in Rocker Lever
Finished Inside Dia. of Rocker Lever Bush
Clearance of Rocker Lever Bush on Rocker Shaft
Valve Clearances 4.108, 4.107, 4.99
Clearance between Valve Stem Tip and Rocker Lever
Rocker Shaft 4.108, 4.107, 4.99
Overall Length of Shaft
Outside Dia. of Shaft
Lubrication
Push Rods
Overall Length
Outside Dia.
4.108, 4.107, 4.99
0.3141/0.3155 in (7,978/8,014 mm)
0.5021/0.5026 in (12,753/12,766 mm)
0.001610.0031 in (0,041/0,079 mm)
0.380 in (9,650 mm)
2.440 in (61,980 mm)
0.80010.815 in (20,320/20,701 mm)
0.312/0.313 in (7,92511,950 mm)
0.0011/0.0035 in (0,028/0,089 mm)
1.410/1.414 in (35,814/35,916 mm)
45'
0.028/0.039 in (0,711/0,991 mm)
4.592/4.608 in (116,637/117,043 mm)
Rubber Oil Seal
0.3115/0.3125 in (7,91217,937 mm)
0.0016/0.004 in (0,041/0,102 mm)
1.19111.195 in (30,251/30,353 mm)
45°
0.021/0.032 in (0,53'3/0,813 mm)
4.60014.616 in (116,840/117,246 mm)
No Seal fitted to Exhaust Valve
1.530 in (38,862 mm)
28.6 Ibf::'::: 2 Ibf (13,0 kgf::'::: 0,91 kgf)
Damper Coil to Cylinder Head
1.780 in (45,212 mm)
56.0 Ibf::':::2.8 Ibf (25,4 kgf::':::1,27 kg!)
Damper Coil to Cylinder Head
1.042/1.058 in (26,467/26,873 mm)
1.567/1.583 in (39,802/40,208 mm)
0.71825/0.71950 in (18,243/18,275 mm)
0.720510.7215 in (18,301/18,326 mm)
0.00110.00325 in (0,025/0,082 mm)
0.6245/0.62575 in (15,862/15,894 mm)
0.00075/0.0035 in (0,01910,089 mm)
0.012 in (0,30 mm) Cold
14.5625 in (369,887 mm)
0.62225/0.62375 in (15,805/15,843 mm)
Oil Feed from Cylinder Head through Central
Passage to Individual Rocker Levers
8.527/8.560 in (216,58/217,42 mm)
0.250 in (6,350 mm)