John Deere約翰迪爾強(qiáng)鹿柴油機(jī)氣缸體前板的拆卸方法與惰輪襯套和軸的測(cè)量

Before the front plate can be removed, the following components must first be removed:

· Timing gear cover. (See REMOVE TIMING GEAR COVER in this group.)

· Timing Wheel. (See REMOVE AND INSTALL

CRANKSHAFT TIMING WHEEL (TWO-VALVE HEAD ENGINES WITH VP44 OR DE10 FUEL INJECTION PUMPS AND ALL FOUR-VALVE HEAD ENGINES in Group 040.)

· Camshaft and gear (A). (See REMOVE CAMSHAFT in this group.)

· Injection pump drive gear (B) and injection pump. See Section 02, Group 090 of CTM207 (Mechanical Fuel Systems), CTM170 (Level 4 Electronic Fuel Systems), CTM331 (Level 12 Electronic Fuel Systems), CTM284 (Level 1 Electronic Fuel Systems) or CTM220 (Level 11Electronic Fuel Systems with Denso High PressureCommon Rail).

· Oil pump drive gear (C) and oil pump. (See REMOVEENGINE OIL PUMP in Group 060.)

· Idler gears (D)

· Balancer shafts (E)1 (See REMOVE BALANCERSHAFTS in this group.)

· Oil pressure regulating valve, if equipped with cartridgetype. (See REMOVE AND INSTALL OIL PRESSUREREGULATING VALVE in Group 060.)

1. Remove four countersunk, TORXâ screws (A) from gear and oil pump using T-40 TORXâ adapter.

NOTE: On earlier engines1, there are two countersunk TORXâ screws used in place of threaded studs(C). On four-valve head engines, double ended studsare used to hold the fuel injection pump andtiming gear cover. Remove if needed.

2. Remove six threaded studs (B) and (C) using E-8TORXâ Socket.

3. Remove front plate (D).

TORX is a registered trademark of Camcar/Textron1 Serial Numbers: Dubuque-built engines ( —703904), Saran-builtengines ( —516217), Torreon-built engines (does not apply).

4. Remove oil bypass valve and spring.

IMPORTANT: All surfaces must be free of oil and dirt.

5. Thoroughly clean front face of cylinder block.

John Deere約翰迪爾強(qiáng)鹿柴油機(jī)惰輪襯套和軸的測(cè)量與標(biāo)準(zhǔn)值參數(shù)

1. Measure idler gear bushing ID and shaft OD todetermine oil clearance. If oil clearance exceedsspecification, replace worn parts.

Specification

Upper Idler Gear Bushing(Two-Valve Head Engine) (30mm Wide Gear)—ID 69.802—69.832 mm(2.7481—2.7493 in.)

Upper Idler Gear Bushing(Two-Valve Head Engine) (22mm Wide Gear)—ID 44.49—44.54 mm(1.751-1.753 in.)

Upper Idler Gear Bushing(Four-Valve Head Engine)—ID 92.732—92.762 mm(3.6509—3.6520 in.)

Lower Idler Gear Bushing—ID 44.489—44.539 mm(1.7515—1.7535 in.)

Upper Idler Gear Shaft(Two-Valve Head Engine) (30mm Wide Gear)—OD 69.757—69.777 mm(2.7463—2.7471 in.)

Upper Idler Gear Shaft(Two-Valve Head Engine) (22mm Wide Gear)—OD 44.43—44.46 mm(1.749-1.750 in.)

Upper Idler Gear Shaft(Four-Valve Head Engine)—OD 92.687—92.707 mm(3.6491—3.6499 in.)

Lower Idler Gear Shaft—OD 44.437—44.463 mm(1.7495—1.7505 in.)

Upper Idler GearBushing-to-Shaft (Two-ValveHead Engine)—Oil Clearance 0.075—0.125 mm(0.0030—0.0049 in.)

Upper Idler GearBushing-to-Shaft (Four-ValveHead Engine)—Oil Clearance 0.0025—0.075 mm(0.0010—0.0030 in.)

Lower Idler GearBushing-to-Shaft—Oil Clearance 0.026—0.102 mm(0.0010—0.0040 in.)

Upper Idler Gear—End Play 0.070—0.170 mm(0.0027—0.0066 in.)

Lower Idler Gear—End Play 0.070—0.330 mm(0.0027—0.0129 in.)

2. If idler gear end play, measured earlier in this group,was out of specification, remove idler shaft and thrustwasher from front plate. (See REMOVE LOWER ANDUPPER IDLER SHAFTS, later in this group.)

3. Check thrust washer for wear.

4. Measure idler gear hub width and shaft width. Replace worn parts that are out of specification.

John Deere約翰迪爾強(qiáng)鹿柴油機(jī)時(shí)間平衡器軸的安裝與標(biāo)準(zhǔn)值參數(shù)

1. Using JDE81-1 or JDE83 Flywheel Turning Tool andJDG1571 or JDE81-4 Timing Pin, lock No. 1 piston atTDC compression stroke.

2. Lubricate balancer shaft bushings and journals with clean engine oil.

IMPORTANT: Balancer shafts MUST BE installed in the location from which removed. Reversing shaft locations could result in excessive bushing and shaft wear. If in doubt about proper shaft locations, replace the balancer shaft and bushings.

3. Install balancer shafts and thrust plates. Tighten thrust plate cap screws to specifications.

Specification

Balancer Shaft Thrust Plate Cap Screws—Torque........................................................... 40 N•m (29.5 lb-ft)

4. Later engines1 have balancer shafts with removable weights. Install weights to balancer shafts using new cap screws and nuts. Tighten to specifications.

Specification

Balancer Shaft Removable

Weights (One-Bolt Weights)— Torque ............................................................................. 58 N•m (43 lb-ft)

Balancer Shaft Removable

Weights (Two-Bolt Weights)—Torque ............................................................................. 40 N•m (30 lb-ft)

1Serial Numbers: Dubuque-built engines (700877— ), Saran-built engines (500212— ), Torreon-built engines (001000— ).

5. Turn right (camshaft side) balancer shaft so timingmark on gear is aligned with JD254A (JD-254A) TimingTool (A). Timing mark on balancer shaft gear mustpoint to centerline of crankshaft when correctly timed.

NOTE: Keyway (B) in balancer shaft gear will be at 12o’clock position, when engine is locked at No. 1TDC compression.

6. Apply TY6333 High-Temperature Grease to idler gearbushing ID and shaft OD. Install lower idler gearwithout turning balancer shaft.

A—Timing Tool

B—Keyway

NOTE: Install thrust washer with “X” mark facing away from gear.

7. Install thrust washer over lower idler gear (C) and shaft.

8. Lubricate and install cap screw through idler shaft into threaded leg of oil pump housing and finger tighten only.

C—Lower Idler Gear

9. Turn left (injection pump side) balancer shaft so timing mark on gear is aligned with JD254A (JD-254A) Timing Tool (A).

10. Install oil pump gear. Finger tighten gear retaining nut.

11. Recheck gear timing for both balancer shafts

12. Tighten oil pump drive gear retaining nut to specifications. Stake nut to shaft in three places (B). (See INSTALL ENGINE OIL PUMP in Group 060 for oil pump installation.)

Specification

Oil Pump Drive Gear Staked

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

13. Tighten lubricated lower idler gear cap screws to specifications.

Specification

Lower Idler Gear Cap Screw (Lubricated Threads)—Torque ........................................ 70 N•m (53 lb-ft)

John Deere約翰迪爾強(qiáng)鹿柴油機(jī)凸輪軸的安裝與技術(shù)參數(shù)規(guī)范

1. Using JDE81-1 or JDE83 Flywheel Turning Tool and JDG1571 or JDE81-4 Timing Pin, lock No. 1 piston at TDC compression stroke.

NOTE: Injection pumps must be properly installed and timed during camshaft installation. For Stanadyne and Delphi/Lucas rotary pumps, see appropriate pump installation procedure in Section 02, Group 090 of CTM207 (MechanicalFuel Systems).

For Denso In-Line pumps, see appropriate pump installation procedure in Section 02, Group 090 of CTM220 (Level 11 Electronic Fuel Systems with Denso High Pressure Common Rail). For static lock-pin timing of Bosch VP44 pumps,

see BOSCH VP44 ROTARY INJECTION PUMP TIMING in Section 02, Group 90 of CTM170 (Level 4 Electronic Fuel Systems). Then, see

INSTALL BOSCH VP44 FUEL INJECTION PUMP in Section 02, Group 090 of CTM170 (Level 4 Electronic Fuel Systems).

For static lock-pin timing of Denso and Motorpal pumps, see DENSO AND MOTORPAL IN-LINE INJECTION PUMP TIMING in Section 02, Group 090 of CTM207 (Mechanical Fuel Systems). Then, see the appropriate pump installation procedure in Section 02, Group 090 of CTM207 (Mechanical Fuel Systems).

For static lock-pin timing of Stanadyne DE10 pumps, see INJECTION PUMP STATIC TIMING in Section 02, Group 090 of CTM331 (Level 12 Electronic Fuel Systems).

For static timing of Delphi/Lucas DP201 pumps,see FUEL INJECTION PUMP TIMING in Section 02, Group 090 of CTM284 (Level 1 Electronic Fuel Systems).

2. Install fuel injection pump and drive gear. See appropriate reference as identified in NOTE above.

3. Lubricate camshaft bearing journals, lobes, and followers with TY6333 High-Temperature Grease.

IMPORTANT: DO NOT allow camshaft lobes to drag on camshaft bore or bushing surfaces while installing camshaft. Bearing surfaces may become scratched or scored. Rotate camshaft during installation to avoid obstruction in any bore.

4. Install camshaft and thrust plate in cylinder block. Be careful not to damage bushing ID.

5. Install thrust plate cap screws and tighten to specifications.

Specification

Camshaft Thrust Plate Cap

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

6. On Two-Valve Head Engine:

a. With JD254A (JD-254A) Timing Tool resting on nose of crankshaft and center of camshaft (as shown), turn camshaft until timing mark (A) on camshaft gear aligns with timing tool.

A—Timing Mark

NOTE: Denso, Motorpal, Bosch VP44 and Stanadyne

DE10 injection pumps are static lock-pin timed

during installation. The following step applies to

earlier Stanadyne and to all Delphi/Lucas Pumps

only.

IMPORTANT: Use the timing mark corresponding to

the number of cylinders the engine has

that is being timed.

b. On earlier Stanadyne and all Delphi/Lucas rotary

pumps: Check injection pump gear timing with

JD254A (JD-254A) Timing Tool resting on nose of

crankshaft and center of injection pump shaft.

Timing mark (B) on injection pump drive gear, as

described in table below, must align with timing tool

(as shown).

INJECTION PUMP GEAR TIMING MARKS

Injection Pump Model Timing Mark

Delphi/Lucas and Stanadyne 4-Cyl. Engine ........... 4

Stanadyne 6-Cyl. Engine ........................................ S6

Delphi/Lucas 6-Cyl. Engine .................................... L6

Delphi/Lucas (1st Production 1170 Combines) ...... L6

Delphi/Lucas (Early 1170 Combines) ..................... 6C

Delphi/Lucas (Late 1170 Combines) ...................... 6Z

IMPORTANT: To ensure proper lubrication of new

upper idler gear bushing and camshaft

bushing, install new upper idler gear

with the reference number facing away

from engine.

c. Lubricate upper idler gear bushing ID and shaft OD

with TY6333 High-Temperature Grease. Using

JDG791A Idler Gear Installer Pilot,1 install idler gear

without turning camshaft gear or injection pump

gear.

NOTE: Install thrust washer with “X” mark facing away

from gear.

d. Lubricate upper idler gear cap screw threads with oil.

Install upper idler gear thrust washer and cap screw.

Tighten cap screw to specifications.

Specification

Upper Idler Gear Cap Screw—

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

e. Recheck camshaft gear (A) and injection pump drive

gear timing to make sure they are correct.

A—Camshaft Gear

7. On Four-Valve Head Engine:

a. Align the fuel injection pump gear timing mark (C) to

the twelve o’clock position.

b. Install upper idler gear rear thrust washer (E) with

side marked “X” facing the front plate (D).

c. Lubricate upper idler gear hub ID and shaft OD with

TY6333 High-Temperature Grease. Install upper

idler gear hub (G).

IMPORTANT: To ensure proper lubrication of new

upper idler gear bushing and camshaft

bushing, install new upper idler gear

with the reference number facing away

from engine.

Gears must have “V 4Valve” marking.

Use straight edge to align timing marks

with shaft center lines.

d. Lubricate upper idler gear ID and upper idler gear

hub OD with TY6333 High Temperature Grease.

Install upper idler gear (F) with timing ribs toward

the front plate. Using straightedge, align camshaft

gear “V 4Valve” timing mark (A) with upper idler

gear “V 4Valve” timing mark (B). The “V” timing

marks must be facing each other and in line with

the centerline of the camshaft gear and the upper

idler gear.

e. Install upper idler gear front thrust washer (H) with

“X” side facing away from gear.

f. Lubricate upper idler gear cap screw (I) threads with

oil. Tighten cap screw to specifications.

Specification

Upper Idler Gear Cap Screw—

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

8. On All Engines: install timing wheel, if equipped. (See

REMOVE AND INSTALL CRANKSHAFT TIMING

WHEEL (TWO-VALVE HEAD ENGINES WITH VP44

OR DE10 INJECTION PUMP AND ALL FOUR-VALVE

HEAD ENGINES) in Group 040.)

Clean and Inspect Timing Gear Cover

1. Drive crankshaft front oil seal out of cover.

2. Remove material and sealant from cylinder block

and timing gear cover gasket surfaces. If

necessary, remove oil filler neck and gasket and

injection pump drive gear nut cover plate and

gasket.

CAUTION: Do not spin bearings when drying

with compressed air.

3. If engine is equipped with the auxiliary drive,

remove auxiliary drive as described earlier in this

group.

4. If engine is equipped with electronic tachometer

(magnetic pick-up) sensor, remove sensor and

O-ring. (See REMOVE AND INSTALL MAGNETIC

PICK-UP SENSOR, as described in this group.)

5. Clean timing gear cover in solvent. Dry with

compressed air.

6. Inspect cover for cracks or damage. Make sure seal

bore is clean and free of nicks.