ROTATOR-VALVE 7N7639 - Caterpillar

Illustration 1 g03837636
Table 1
Specification for 335-4161 Alternator Mounting Gp
Item Qty Part Specification Description
2 - - Tighten the pulley retaining nut to 110 10 N m (81 7 lb ft).
Misalignment between pulley assembly (3) and pulley (1) should not be exceed to 0.4 degrees.
4 1 141-7116 Serpentine Belt Adjust the belt tension of the serpentine belt according to the 197-9087 Tension Chart.
5 1 235-2484 Lip Type Seal Lubricate the sealing lip lightly with the lubricant that is being sealed. 197-9087 Belt Tension Chart
Table 2
Specification for 197-9087 Belt Tension Chart
Size of Belt Width of Belt Gauge Reading Gauge (Force) Belt Tension (Frequency)
“Initial”(1) Belt Tension (Frequency)
“Used”(2)(3) Gauge (Frequency)
Belt Tension (Force)
“Initial”
(1) Belt Tension (Force)
“Used”
(2)(3) Basic Gauge Number Gauge Number
8 - RIB
POLY - RIB 27.82 mm (1.100 inch) 800 22 N (180 5 lb) 489 44 N (110 10 lb) BT-33-109 98 10 HZ 76 8 HZ Clavis Type 14
Do not use the belt tension chart for belts with tensioners that are spring loaded.
Measure the tension of the belt that is farthest from the engine.
(1) Belt tension “lnitial” is for a new belt.
(2) Belt tension “Used” is for a belt that has operated for 30 minutes or more of operation at the rated speed.
(3) If a belt falls below the “Used” belt tension, the belt should be tightened again to the high side of the “Used” belt tension.