2
SECTION 41 − STEERING − CHAPTER 1
603.54.471.00 − 11 − 2004
MAIN SPECIFICATIONS OF HYDRAULIC PUMP
Pump
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump rotation (viewed from drive side) . . . . . . . . . . . . . . . . . . . . . . . . .
Engine speed to pump speed ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum speed of pump rotation
(with engine at power equivalent to 2500 rpm) rpm.. . . . . . . . . . . . . . .
Rated output dm
3
/turn (inch
3
/turn). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corresponding rated output for new pump dm
3
/turn (inch
3
/turn). . . . .
gear type, with oil suction from
transmission casing
behind the timing cover
BOSCH
governed by the timing
C25
clockwise
1:1,080
2700
0.01126 (0.6871)
30.4 (1855.1736)
Diameter of driven and driving gear shafts mm (in.). . . . . . . . . . . . . .
Internal diameter of seats in supports mm (in.). . . . . . . . . . . . . . . . . .
Clearance between gear shafts and their seats mm (in.). . . . . . . . . .
− maximum permitted wear clearance mm (in.). . . . . . . . . . . . . . . . . .
Radial clearance of gears in pump body mm (in.). . . . . . . . . . . . . . . .
Maximum wear on pump body, suction side,
at position of gears mm (in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17,400 − 17,418 (0.6850−0.6857)
17,450 − 17,475 (0.6870−0.6880)
0,032 − 0,075 (0.0013−0.0030)
0,1 (0.0039)
0,020 − 0,064 (0.0008−0.0025)
0,1 (0.0039)
Cylinder
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bore diameter:
− two−wheel drive mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− four−wheel drive mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− four−wheel drive with 2 cylinders mm. . . . . . . . . . . . . . . . . . . . . . . . .
Maximum piston stroke:
− two−wheel drive mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− four−wheel drive mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− four−wheel drive with 2 cylinders mm. . . . . . . . . . . . . . . . . . . . . . . . .
Pin diameter mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Double acting, located behind front
axle
OGNIBENE
48 (1.89 in)
48 (1.89 in)
42 (1.653 in)
215 (8.464 in)
202 (7.953 in)
208 (8.189 in)
22 (0.866 in)