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CYLINDER HEAD AND VALVE COMPONENTS (cont)
PISTON PIN BEARING REMOVAL AND INSTALLATION
TM-5-3805-260-24 Scraper Tractor: Elevating Self-Propelled 11 Cubic Yard Sectionalized and Nonsectionalized Manual
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TM 5-3805-260-24
CYLINDER HEAD AND VALVE COMPONENTS
VALVE SPRINGS
Check valve springs with the 8S2263 Valve
Spring Tester. Springs not meeting Specifications
should be replaced.
VALVE SPRING SPECIFICATIONS
Item
9N3617 Spring
9L9190 Spring
9L9172Spring
Length under test force
1. 655 in.
(42. 04 mm)
1. 715 in.
(43. 56 mm)
1. 715 in.
(43. 56 mm)
Test force
50
+
5 lb. .
(220
+
22 N)
35
+
5 lb.
155
+
22 N)
16 5
+
4 lb.
(73 5 ± 18 N)
Use again minimum load at
length under test force
35 lb.
(155 N)
29 lb.
(130 N)
12 lb.
(53 N)
Length of spring at valve
open position
1. 167 in.
(29 64 mm)
1. 215 in.
(30 86 mm)
1. 215 in.
(30 86 mm)
Use again minimum load at
valve open position
(687 N)
154 5 lb.
146 lb.
(650 N)
65 lb.
(290 N)
Free length after test
1. 855 in.
(47 12 mm)
1 85 in.
(471 mm)
1. 85 in.
(471 mm)
Outside diameter
1. 440 in.
(36 58 mm)
1. 440 in.
(36 58 mm)
. 998 in.
(25 35 mm)
Spring must not be bent
more than
. 065 in.
(1 65 mm)
065 in.
(1 65 mm)
065 in
(1 65 mm)
3-382
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