Click here to make tpub.com your Home Page

Page Title: Inspection and Repair.
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

f. Reassembly (fig. 5-19).
(2) Remove the fuel injection pump retailing
bushing (3) from the housing.
NOTE
Immerse all parts in clean diesel fuel before
(3) Using an extractor, remove the fuel in-
reassembling.
jection pump from the housing.
(1) Install the bearing (25) so that the hole in
NOTE
the bearing aligns with the oil passage in the
Components of the fuel injection pumps cannot be
interchanged. Tag parts for assembly with the same
housing. Install the bearing (24). Ensure that the
parts and installation in the same bore in the fuel
bearings are flush with the face of the housing.
pump housing.
(2) Install the camshaft (23) in the housing.
(3) Install the spacer (22), ring gear (21),
(4) Remove the retaining ring (4) and
spring (20), spring retainer (19), lock (18) and bolt
separate the bonnet (5) from the barrel (6).
(17).
(5) Remove the check valve (7) and spring (8)
(4) Install the valve lifter (16) and sparer
from the bonnet.
(15).
(6) Remove the plunger (9), keeper (10) and
spring (11) from the barrel (6).
(5) Install the bearing (14) so that the hole in
the hearing aligns with the marks made on the
(7) Remove the fuel rack (12) from the
housing before removal. Install the bearing (13)
housing.
(6) Install the fuel rack (12).
(8) Remove  the  bearing  (13)  from  the
housing.
(7) Install the spring (11), keeper (10) and
plunger (9) in the barrel (6).
(9) Scribe two marks on the housing above the
groove on the bearing (14) and in line with the
(8) Install the spring (8) and check valve (7)
in the bonnet (5).
lubrication passage. Remove the bearing.
(9) Secure the bonnet (5) to the barrel (6)
(10) Remove the spacer (15) and the valve
lifter (16).
using retaining ring (4). Install the barrel and
bonnet assembly in the fuel pump housing. Align
(11) Remove the bolt (17), lock (18), spring
the notches in the bonnet and barrel with the mark
retainer (19) and spring (20).
180 from the gear center tooth. Align the notches
(12) Remove the ring gear (21) and spacer
with the guide pins in the housing bore. Align the
(22).
pump gear center tooth with the fuel rack center
(13) Remove the camshaft (23) from the
notch.
housing.
(14) Remove the bearing (24 and 25). Scrape
(10) Press down on the barrel and bonnet
assembly and install the retaining bushing (3) flush
the gaskets (26 and 27) from the housing (28).
with the top of the housing. If the bushing cannot
d. Cleaning. C l e a n all components except
be properly installed,  remove the barrel and
bearings with Fed. Spec. P-D-680 cleaning solvent
bonnet, realign and reinstall. Tighten the bushing
and dry with compressed air. Clean bearings as
to a torque of 140 to 160 foot-pounds.
instructed in paragraph 2-6.
(11) Install the felt washer (2) and the cap
e. Inspection and Repair.
(1).
(1) Inspect all components for cracks, chips,
g. Installation. Install the fuel injection pump in
nicks, grooves, scores, pitting and wear. Repair or
the reverse order of removal. Tighten bolts and
replace parts as required.
fittings securely. Check and adjust timing (subpara
(2) Inspect the sliding surfaces of pump
h, i, or j) and fuel rack setting (subpara k ).
plungers for grooves and scratches. Ensure that
h. Checking Fuel Injection Pump Timing (On
edges are not rounded.
Engine, Using a Timing Set).
(3) Inspect the check valve collar for grooves
(1) Remove the rocker arm cover.
and scratches. Replace if surfaces cannot be
(2) Install a timing indicator set in the
smoothed with emery cloth.
precombustion chamber of the pump to be tested.
(4) Replace pump plungers and barrels as a
Follow instructions included with the indicator set.
unit.
Disconnect the fuel line to the precombustion
(5) Replace the check valve as a unit.
chamber. Cap or plug openings.
(6) Inspect  camshaft cams  and camshaft
(3) Move the governor control to the full load
bearings for wear. Replace as necessary.
position.
(7) inspect the control rod for worn notches.
(4) Maintain a 10 to 15 psi fuel pressure with
(8) Replace pump plunger washers which
the fuel priming pump or shop air.
show signs of wear.
CAUTION
(9) Measure pump plungers using a
If shop air is used, connect a relief valve
micrometer. Replace any plunger less than 2.5881
which will release pressure above 15
inches long.
psi. Open the fuel shutoff valve.
5-24

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business