324E and 329E Excavators and 329E MHPU Mobile Hydraulic Power Unit Machine Systems Caterpillar

Upper Frame and Undercarriage Frame - Separate

Usage:

324E JCZ

Separate Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	1P-0074	Slide Hammer Puller Gp	1
A	4C-5655	Threaded Adapter	1
B	228-4533	Boom Cylinder Link Gp	1
C	-	Bar Stock 48 inch by 5 inch Round	1
D	8S-7640	Stand	1
	8S-7621	Tube	2
	8S-8048	Saddle	2
	8S-7615	Pin	2
	8S-7625	Collar	2
	8S-7650	Cylinder As	2
E	FT-2765	Support Beam As	1
F	-	Guide Bolt M24-x3 by 250mm	4
G	9U-7536	Lift Stand	2
H	-	Guide Bolt M20-x2.5 by 250mm	2
J	276-8831	Pin Driver	1
K	-	Loctite RTV Clear Silicone Sealant	-
L	FT-2674	Vacuum Cap	1

Start By:

Remove the bucket.

Start the engine. Park machine on a hard, level surface.

Drain the oil from each final drive into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Final Drive Oil - Change".

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Illustration 1	g02458267

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Illustration 2	g02458336

Remove two bolts (1). Attach Tooling (H) in order to hold planetary gear assembly from falling. Remove remaining bolts (1) from cover assembly (2) .

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Illustration 3	g02458356

Use Tooling (A) to remove cover assembly (2). Make sure that the planetary assembly does not slide outward when the cover assembly (2) is being removed. This will keep contamination out of planetary gears.

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Illustration 4	g02458357

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Illustration 5	g02458360

The planetary gear group is being held onto the sprocket housing at this time only by Tooling (H). The approximate weight of the planetary group is 163 kg (360 lb). Be careful not to allow the planetary gear group to slide outward.

Remove bolts (3) and ring gear (4) from cover assembly (2). Apply Tooling (K) onto cover assembly (2). Install the cover assembly (2 ) onto the final drive. Install bolts (1), and tighten in order to hold oil in the final drive. Fill final drive with oil. Refer to Operation and Maintenance Manual, "Final Drive - Oil Change".

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Illustration 6	g02458377

Adjust the height of Tooling (D) so that Tooling (C) can be installed under the end of the stick, as shown. Make sure that Tooling (C) is centered under the end of the stick.

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Illustration 7	g02458379

Disconnect hose assembly (5). Remove bolts (6) and plate (7) .

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Illustration 8	g02458380

Attach a suitable lifting device to boom cylinder (8). Using Tooling (J) drive pin (9) inward to clear cylinder. Remove boom cylinder (8). Refer to Disassembly and Assembly, "Boom Cylinder - Remove".

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Illustration 9	g02458396

Adjust the length of Tooling (B) and install Tooling (B) in place of the right-hand boom cylinder. Be sure to use five bolts, five washers, and five nuts in order to hold Tooling (B) together. Install plate (7) and bolts (6) in order to hold Tooling (B) on machine.

Release the pressure in the hydraulic system.

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At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.
To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.

Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.

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Illustration 10	g02458416

Disconnect hoses (10). Remove bracket (11), retaining ring (12), and clamp (13) .

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Illustration 11	g02458459

Position Tooling (E) and (G) under the main frame, ahead of counterweight (14) .
Note: DO NOT LIFT BY COUNTERWEIGHT

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Illustration 12	g02458500

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Illustration 13	g02458501

Note: Use the identifying marks on the upper structure, on the swing gear, and on the undercarriage to align the undercarriage with the upper structure for assembly purposes.

Note: Loosen bolts (17) that will be over tracks before swinging upper frame to 90 degree position for removal.

Remove tube assembly (16). Remove two bolts (17) from swing gear. Install Tooling (F) into swing gear in order to maintain alignment for assembly. Remove remaining bolts (17). Use Tooling (D) and (G) in order to raise the upper structure off the undercarriage in increments of 13 mm (0.5 inch). Raise the upper structure until the upper structure is above the pinion shaft. The weight of the upper structure is approximately 22217 kg (48980 lb).

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Illustration 14	g02458516

Use a suitable towing device and slowly pull undercarriage frame assembly () away from the upper structure. The weight of undercarriage frame assembly () is approximately 12383 kg (27300 lb).