John Deere約翰迪爾強鹿柴油機機油泵的拆卸、檢查和安裝標準技術規(guī)范參數

A loose or damaged suction tube or O-ring can cause a

temporary loss of prime for the engine oil pump at

start-up. There will be low or no oil pressure at starting,

followed by normal engine oil pressure.

NOTE: If the pick-up tube is to be inspected only and not

removed, verify mounting cap screw torque to

ensure proper seating and seal.

1. Remove oil pan.

2. Loosen cap screws (A) and remove oil pump pick-up

tube assembly.

3. Inspect pick-up tube for cracks, restrictions or damage.

Replace if necessary.

4. Install assembly with new O-ring and tighten cap

screws to specifications.

Specification

Oil Pump Pick-Up Tube Cap

Screws—Torque.............................................................. 35 N•m (26 lb-ft)

5. Reinstall oil pan. (See INSTALL OIL PAN, later in this

group.)

Engine Oil Pump Assembly

A—Outlet Tube

B—O-Ring

C—Pump Housing

D—Idler Gear

E—Drive Gear

F—Cover

Remove Engine Oil Pump

1. Drain oil and disconnect turbocharger oil inlet line (A)

at the turbocharger.

2. Remove oil pan.

3. Remove gasket from oil pan and oil pan rail.

A—Oil Inlet Line

4. On 4-cylinder engines with balancer shafts, lock

crankshaft at TDC using JDE81-1 or JDE83 Flywheel

Turning Tool and JDG1571 or JDE81-4 Timing Pin.

Then lock the balancer shaft (injection pump side)

using a lock-grip pliers so that balancer shaft cannot

turn while oil pump gear is being removed.

IMPORTANT: When removing nut and gear from

tapered oil pump drive shaft, take care

not to damage fine threads on end of

shaft.

5. Remove nut (B) and pull gear from tapered oil pump

drive shaft.

To remove oil pump gear, loosen nut several turns and

apply force between the front plate and gear on two

sides of gear with pry bars.

If above method does not work, loosen oil pump

housing cap screws and strike the nut on end of shaft

with a small lead hammer while applying force to gear

until gear is free of tapered shaft.

6. Remove oil pump pick-up tube. (See REMOVE,

INSPECT, AND INSTALL OIL PUMP PICK-UP TUBE

ASSEMBLY in this group.)

7. Remove upper two cap screws and remove cover (A).

NOTE: The lower idler gear cap screw (C) has to be

removed to remove the oil pump housing.

8. Loosen idler cap screw (C).

9. Remove lower oil pump housing cap screws and turn

idler cap screw (C) out while removing oil pump

housing assembly (B).

A—Cover

B—Oil Pump Housing

C—Idler Cap Screw

Inspect and Measure Clearances

Inspect oil pump components for excessive wear. Replace

parts or oil pump assembly, as necessary.

1. Check gear-to-pump cover axial clearance.

Specification

Oil Pump Gears—Thickness 35.975—36.025 mm

(1.4163—1.4183 in.)

.....................................

Oil Pump Gears—Axial Clearance 0.045—0.165 mm

(0.0018—0.0065 in.)

2. Check gear-to-pump housing radial clearance.

Specification

Oil Pump Gears—Radial

Clearance 0.131—0.211 mm

(0.005—0.008 in.)

3. Check housing and cover bore ID and shaft OD.

Inspect cover and housing for evidence of gear rub.

Light contact is acceptable.

4. Measure bushing ID in housing and bore in cover.

Specification

Oil Pump Drive Shaft—OD 16.017—16.037 mm

(0.6306—0.6314 in.)

........................................

Oil Pump Bushing in Housing—ID 16.052—16.102 mm

(0.632—0.634 in.)

5. Measure idler shaft OD and idler gear ID

Specification

Oil Pump Idler Shaft—OD 12.316—12.332 mm

(0.4849—0.4855 in.)

.........................................

Oil Pump Idler Gear—ID 12.355—12.363 mm

(0.4864—0.4867 in.)

Complete Oil Pump Disassembly

1. Remove O-ring from pump housing and cylinder block

(for outlet tube).

2. Remove O-ring from oil pick-up tube.

3. Clean oil pump parts in solvent. Dry with compressed

air.

4. Inspect pick-up tube. Check flange-to-pick-up tube

weld for cracks. If cracks or other defects are found,

replace pick-up tube. (See REMOVE, INSPECT AND

INSTALL OIL PUMP PICK-UP TUBE ASSEMBLY, in

this group.)

Assemble Engine Oil Pump

A—Outlet Tube

B—O-Ring

C—Pump Housing

D—Idler Gear

E—Drive Gear

F—Cover

IMPORTANT: Lubricate gears and shaft with clean

engine oil before assembling.

1. Install new O-ring (B) in pump cover (F).

2. Put idler gear (D) and drive gear (E) in pump housing

(C).

發(fā)動機機油泵的安裝

NOTE: This procedure is for installing the oil pump with

timing gear cover installed. If timing gear cover is

removed from engine, refer to INSTALL AND

TIME BALANCER SHAFTS (4-Cylinder Engines)

in Group 050.

1. On 4-cylinder engines with balancer shafts, lock No. 1

piston at TDC compression stroke.

2. Install new O-rings in cylinder block and oil pump cover

(for outlet tube). Install tube into cover and block.

3. Lubricate lower idler gear cap screw threads (C) and

draw into leg of housing finger tight while installing oil

pump housing (A) with gears onto front plate.

4. Wedge a hardened round punch between the drive

gear and idler gear.

5. Install oil pump drive gear (D) so that it meshes with

lower idler gear (E) and balancer shaft gear (4045

engines only) without altering gear train timing.

6. Install new retaining nut and tighten to specifications.

Specification

Oil Pump Drive Gear “Staked”

Nut—Torque .................................................................... 50 N•m (37 lb-ft)

7. Stake oil pump drive gear nut by applying three center

punch marks near ID of shaft.

8. Swing (position) oil pump cover (B) onto pump housing

and install two lower cap screws finger tight.

9. Install new O-ring (A) on neck of pick-up tube. Install

pick-up tube. (See REMOVE, INSPECT, AND

INSTALL OIL PUMP PICK-UP TUBE ASSEMBLY in

this group.)

A—O-Ring

NOTE: Idler gear cap screw threads (5) must be

lubricated.

10. Tighten four cap screws and lower idler gear cap

screw to specified torque according to sequence

shown.

Specification

Oil Pump-to-Front Plate and Oil

Pump Pick-Up Tube Cap

Screws—Torque.............................................................. 35 N•m (26 lb-ft)

Oil Pump Lower Idler Gear Cap

Screw (Lubricated Threads)—

Torque ............................................................................. 70 N•m (53 lb-ft)