Bosch 7100 Specifications download pdf (Page 6)

SECTION EG 60-5A

ENGINE

-- GOVERNING SYSTEMS

IN TERN A IONA L

AGB 270/280

AGB 270 and AGB 280 ACTUATOR ASSEMBLIES

Note: (I) If fuel pump has a mechanical governor attached, 12. Assemble the actuator housing assembly (1), 'o' ring

consult Robert Bosch agent for removal instructions. (104) and sealing gasket (114) to the fuel pump using

(II) In order to be compatible with the R. Bosch the two top mounting capscrews (110) and lockwashers

fuel pump this actuator is built with metric hardware. (111 ) loosely fitted.

ASSEMBLY PROCEDURE: 13. With the shims (204) from step (4) held in place, align

the locating hole in the actuator housing (1) with the pin

Measurements fRef. Assembly Drawings Figures 5, 6 & 7) in the bearing cover (200) and fasten the lower mounting

1. Assemble the bearing cover (201) to the fuel pump capscrews (112) and washers (113) in place. Torque the

without the sealing gasket (202) or the shims (203)-(206), lower and upper mounting capscrews progressively to

using the two top mounting capscrews (211) only. 7-9 Nm (9.5-12.3 lbs. ft.).

2. Assemble the housing assembly (1) and sealing gasket 14. Locate spring adjuster (106) and shutdown stop (105) in

(114) to the fiiel pump using the two top mounting link (103) to the retracted position.

capscrews (110) and the two bottom mounting capscrews 15. With spring (109) installed, clamp link (102) and rod end

(112). Torque capscrews progressively to 7-9 Nm (24) to rack connecting link (103) with capscrew (116).

(9.5-12.3 lbs. ft.). Access for the socket headed capscrew is through the tA

3. Measure the gap 'D' between the pump bearing cover inch pipe plug hole as shown. Note: A lockwasher is

"-_ (201) and the actuator housing (1). The supplied not required for capscrew (116), the threads in link

mounting shims may be used for this purpose. (103) are self-locking.

4. Set aside the shims (207)-(210) determined in step (3) 16. Check that the linkage slides (freely without any bind-

for later use. ing. This is important, binding could cause loss of

control and engine damage.

5. With the actuator rotor not connected to the fuel pump

rack, measure the gap between actuator rotor and the Adjustments

actuator housing 'E' as shown on Figure 5. Note for 17. With the fuel pump rack pushed to its full fuel position

later reference, towards the front of the fuel pump, measure the gap 'E'

6. Remove the actuator housing (1), gasket (114) and bear- between the actuator rotor and the housing.

ing cover (201) from the fuel pump. 18. Check that this gap is .25 (.010 inches) to 1.0mm (.040

7. Measure the depth of the bearing cavity 'A' in the inches) greater than that measured in step (5), i.e.,

bearing cover (201). Note: This is from the tips of the 4 rack travel is not restricted.

pump contacting feet. Ref. Fig. 7. 19. The gap can be adjusted by removing capscrew (25),

8. Measure the protrusion of the fuel pump camshaft bearing loosening rod end locknut (26) and rotating the outer

'B' from the pump face. Ref. Fig. 6. half of the rod end assembly (8) in steps ofhalfa turn.

9. Subtract 'B' from 'A'. This is the amount of shims needed Check to be sure that the rod end bearings are properly

for zero clearance between the bearing cover and the aligned to avoid binding when the actuator moves and

bearing. Select a combination of supplied shims (203)- lock in this position using locknut (26).

(206) to make up this value. 20. With the fuel pump rack pushed in to the full fuel

position, adjust the shutdown stop screw (105) so that

Assembly shutdown lever (10) can be rotated against its return

10. Mount the gasket (202) and bearing cover (201) complete spring with approximately 1/_mm (.010 inches) of free

with shims (203)-(206) to the fuel pump using the two play.

top capscrews (211). Torque to 7-9 Nm (9.5-12.3

Ibs. ft.). 21. This ensures that the full power fuel pump rack travel

is not restricted. If required, for specific applications,

11. Secure the rack connecting link (102) to the fuel pump the screw (105) can be turned clockwise to limit

rack using two capscrews (108) and lockwashers (107). maximum fuel delivery.

Page 5

Section EG 60-4

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Bosch 7100 Specifications Page 6

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