335F CR Excavator Machine Systems Caterpillar

Hydraulic Tank - Remove and Install

Usage:

335F FEP

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	421-5662	Lifting Eye Assembly	4
B	-	Loctite 271 Threadlocker High Strength	-
C	-	Loctite 242 Threadlocker High Strength	-

Start By:

Release the hydraulic system pressure.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat^® products. Dispose of all fluids according to local regulations and mandates.

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Illustration 1	g03788516

Remove bolts (2) and remove cover (1) that is located under the hydraulic oil tank.
Drain the hydraulic oil. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct draining and filling procedures.
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Illustration 2 g03788517
Open hood assemblies (3).
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Illustration 3 g03788519

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Illustration 4 g03788520
Remove bolts (5), bolt (6), bolt (7), and sheet assembly (4).
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Illustration 5 g03788521

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Illustration 6 g03788522
Remove bolts (10) and sheet assembly (8).
Remove bolts (11) and cover sheet assembly (9).
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Illustration 7 g03788523
Remove bolts (13) and sheet assembly (12).
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Illustration 8 g03788524
Remove bolts (15), step assembly (16), and sheet assembly (14).
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Illustration 9 g03788525
Disconnect harness assemblies (18) and cut cable straps (17) securing harness assemblies (18) to the hydraulic oil tank. Position harness assemblies (18) out of the way.
Remove bolts (19) and disconnect pipe assembly (20) from the hydraulic oil tank.
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Illustration 10 g03788526
Remove bolts (22) and cover assembly (21).
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Illustration 11 g03788527
Disconnect hose assemblies (24).
Remove bolts (23) and position support assembly (25) out of the way.
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Illustration 12 g03788528
Open door assembly (26).
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Illustration 13 g03788529
Disconnect hose assemblies (27).
Disconnect harness assembly (28) and harness assembly (29). Cut the cable straps that secure harness assembly (28) and harness assembly (29) to the hydraulic oil tank. Position harness assembly (28) and harness assembly (29) out of the way.
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Illustration 14 g03788530
Remove bolts (30) and disconnect pipe assembly (32).
Remove bolts (31).
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Illustration 15 g03788531

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Illustration 16 g03788532

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Illustration 17 g03788533
Attach Tooling (A) and a suitable lifting device to hydraulic oil tank (33). The weight of hydraulic oil tank (33) is approximately 305 kg (672 lb).
Remove bolts (34) and bolts (35). Remove hydraulic oil tank (33).

Installation Procedure

Install hydraulic oil tank (33) in the reverse order of removal.
1. Apply Tooling (B) to the threads of bolts (31), bolts (34), and bolts (35).
2. Tighten bolts (19) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
3. Apply Tooling (C) to the threads of bolts (2).