2000/07/03 Caterpillar

Integrated Toolcarrier:

IT14G (PIN: 1WN1-UP; 8ZM1-UP)

Wheel Loader:

914G (PIN: 7ZM1-UP; 9WM1-UP)

Description of Change: A new muffler has replaced the former muffler in order to reduce the sound level. The former muffler will continue to be serviced. Changes to the lines group and changes to the hood group have been made in order to accommodate the new muffler.

Adaptable To: The new 133-9478 Muffler Assembly has replaced the former 130-7963 Muffler Assembly. The new 133-9478 Muffler Assembly is effective with 914G (PIN: 7ZM240-UP; 9WM421-UP) and IT14G (PIN: 8ZM198-UP; 1WN282-UP). The 133-9478 Muffler Assembly is adaptable to earlier machines by performing the Installation Procedure on Prior Built Machines.

Procedure to Adapt 133-9478 Muffler Assembly to Prior Built Machines

1. Remove the parts which are listed in Table 1.
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   Table 1

   Parts That Need to Be Removed
   Qty	Former Part Number	Description
   1	127-6976	Tube
   1	127-6975	Flange
   1	2F-8299	Clamp
   1	2Y-5829	Nut
   2	6V-5839	Washer
   1	6V-5843	Bolt
   1	127-6977	Exhaust Tube Assembly
   1	131-8598 (1)	Hose Assembly
   1	134-1261	Bracket
   1	133-9478	Muffler Assembly

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   ( 1 )

   Only on machines with A/C

2. Install the parts which are listed in Table 2.
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   Table 2

   Parts That Need to Be Installed
   Qty	Part Number	Description
   1	133-9479	Bracket
   1	133-9480	Bracket
   4	8T-4121	Hard Washer
   2	8T-4136	Bolt
   2	8T-4182	Bolt
   1	8T-4223	Hard Washer
   2	5P-4116	Washer
   2	8T-4908	Bolt
   1	8T-5412	Bolt
   1	134-1260	Exhaust Tube Assembly
   1	112-3250 (2)	Hose Assembly
   1	134-1261	Bracket
   1	133-9478	Muffler Assembly

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   ( 2 )

   Only on machines with A/C

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Illustration 1	g00721525

3. Torque bolt (1) and bolt (2) to 60 ± 12 N·m (44 ± 9 lb ft). See Illustration 1.