994K Wheel Loader Caterpillar

DEF Manifold Filters - Replace - Emission Related Component

Usage:

994K SMX

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NOTICE

Ensure that the engine is stopped before any servicing or repair is performed.

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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, "Cat Dealer Service Tool Catalog" or refer to Special Publication, PECJ0003, "Cat Shop Supplies and Tools Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates.

Note: Refer to Special Instruction, REHS8231, "Removal Procedures for Diesel Exhaust Fluid (DEF) Connectors" for the correct removal procedure of hose assemblies (1) and (5).

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Illustration 1	g06187665
(1) Hose (2) Clip (3) Hose

Clamp off hoses (1).
Remove clips (2). Remove hose assemblies (1) and (3).
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Illustration 2 g06187668

(4) Bolt
(5) Plate
(6) Tank Manifold
Remove bolts (4), plate (5), tank manifold (6), and gasket (not shown).
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Illustration 3 g06187673

(7) Band Clamp
(8) Filter Base
Unscrew the band clamp (7) and remove the band clamp from the filter base (8).
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Illustration 4 g06187675

(9) Filter
Remove the filter (9) from the filter base.
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Illustration 5 g06187676

(10) Suction Filter
(11) Pulling Tabs
Remove the suction filter (10) at the bottom of the header coils by pulling tabs (11). Replace with a new suction filter.
Install new filter by pulling filter over the manifold coils up to the bottom of the assembled filter base.
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Illustration 6 g03665754
Tighten the band clamp 4.5 ± 0.7 N·m (40 ± 6 lb in), ensuring that the band clamp is aligned, as shown in illustration 6, to the flat spot on the base. Ensure that the filter does not bunch when tightening the band clamp.
Install the tank manifold following steps 3 through 5 in reverse order with a new gasket.
Tighten bolts (6) in an alternating sequence to 5 ± 1 N·m (44 ± 9 lb in). Tighten bolts (6) a second time in an alternating sequence to 5 ± 1 N·m (44 ± 9 lb in). Apply rubber lubricant to the o-ring seal inside hose assemblies (1).