Chapter 1 – General information / Technical specifications
Service Manual AJP PR3/PR4 1 - 30
Screw purge air in the fork cover
M5x6
-
O-ring of the air purge screw
4,8x1,8
-
Limiting ring of the forks protections
50x2mm
-
Fork / lower valve fixing nut
M18x1 (Hexag. 19mm)
-
Sealing ring of the fixing nut lower forks
18x2,35
-
Spring fork (no load)
402mm
-
Dimensions of the springs
Ø31,2x402x22,5mm
-
Wire thickness of the springs
4,25mm
-
Installed spring length in the cartridge
397mm
-
Nylon bushing on the rod of the hydraulic cartridge
Ø12x120x22,6mm
-
Fine spring separator on the cartridge rod
60mm (Ø17x14x60)
-
Aluminum adjuster inside the rod
M12 (18mm height)
-
Distance between the adjuster on the rod and fork
cover
81,5mm
-
O-rings seals of the adjuster in the fork cover
4,5x1,9
-
Ball fixer of the adjuster position
3mm
-
Rod / needle aluminum hydraulic regulation
Ø4x45x433mm
-
Hydraulic cartridge tube
M22x1 (Ø25x390x22)
-
Valve thread pitch on the cartridge tube
M12
-
Oil quantity (in each fork)
355ml
-
Recommended oil
AGIP FORK SAE 5W
-
Function of the fork
adjusters
In the fork covers
Return (extension)
-
Tight (F)
Slower return
-
Loosened (S)
Faster return
-
At the bottom of the fork
Compression
-
Tight
Harder
-
Loosened
Softer
-
Standard regulation
FASTACE
Return (on top)
2 Clicks
(Since all tight)
-
Compression (on the
bottom)
5 Clicks
(Since all tight)
-
PR4 EN/SM/TRAIL fork (2012)
MARZOCCHI USD 40mm
-
Type
Up side down
-
Forks of the fork
Ø
40x610mm
-
Tubes of the outer forks
568mm
-
Maximum warpage of the tubes / forks of the fork
-
0,2