Manual

15
Nor-Cal Products, Inc., 1967 South Oregon St., Yreka, CA 96097 • Toll Free 800-824-4166 or 530-842-4457 • www.n-c.com Rev. 1-2013
Valve Adjustment Chart
INSTRUCTION FOR VALVE ADJUSTMENT
VALVE DIMENSION “A” DIMENSION “B” DIMENSION “B” DIMENSION “C” RECOMMENDED
SIZE PISTON ADJUST* OVERCENTER NO OVER- COMPRESSION LOCKING AIR
ADJUST CENTER ADJUST PRESSURE
ADJUST
1.50 .110 ** N/A N/A .210 20-30 PSI
2.00 .120 ** N/A N/A .360 35-50 PSI
2.50 .125 ** N/A N/A .190 35-55 PSI
3.00 .125 ** N/A N/A .390 60-65 PSI
4.00 N/A .278 .360 .420 20-35 PSI
6.00 N/A .085 .160 .350 35-45 PSI
8.00 N/A .365 .465 .260 55-65 PSI
10.00 N/A .770 .800 .720 25-35 PSI
10.75 N/A .635 1.035 .550 30-40 PSI
12.00 N/A .640 1.035 .550 30-40 PSI
14.00 N/A — — — 45-55 PSI
16.00 N/A .540 .760 .540 65-80 PSI
18.00 N/A — — — —
21.00 N/A — — — —
Figure 14 - VALVE ADJUSTMENT TABLE
DIM “A”
LOWER LINK
ASSEMBLY
PISTON ASSEMBLY AD-
JUSTMENT
LOWER LINK
ASSEMBLY
ADJUSTMENT
ALL DIMENSIONS IN INCHES
* = STARTING ADJUSTMENT
** = PISTON ADJUSTMENT CONTROLS
OVER- CENTER ADJUSTMENT
DIM “C”
DIM “B”