BRACKET 3533974 - Caterpillar

Table 1
M Series 2 New Venturi Tube Assembly Effectivity    
Sales Model     Adaptable to Machines     Effective with Machines    
120M Series 2     S/N:M9C1-548     S/N:M9C549-UP    
S/N:M9H1-368 S/N:M9H369-UP    
S/N:R9N1-197 S/N:R9N198-UP    
S/N:R9W1-177 S/N:R9W178-UP    
12M Series 2     S/N:F9B1-220     S/N:F9B221-UP    
S/N:F9M1-481 S/N:F9M482-UP    
S/N:R9P1-199 S/N:R9P200-UP    
S/N:R9R1-105 S/N:R9R106-UP    
S/N:R9S1-360 S/N:R9S361-UP    
140M Series 2     S/N:M9D1-1844     S/N:M9D1845-UP    
S/N:M9J1-952 S/N:M9J953-UP    
S/N:R9G1-372 S/N:N9J373-UP    
S/N:R9M1-559 S/N:R9M560-UP    
160M Series 2     S/N:M9E1-409     S/N:M9E410-UP    
S/N:M9K1-425 S/N:M9K426-UP    
S/N:R9L1-258 S/N:R9L259-UP    
S/N:R9T1-349 S/N:R9T350-UP    
Table 2
Required Part    
Qty     Item     Part Number     Part Name    
1     1     443-8156     Tube As (Venturi)    Your machine was shipped with either of the following configurations:
A venturi with an air cleaner and check valve as shown in Illustration 1.
A venturi with an air cleaner only as shown in Illustration 2.
Illustration 1 g03882849
Venturi configured with air cleaner and check valve (tube assembly venturi is not shown in this view) (A) Existing pre-cleaner (B) Existing Hose (C) Existing check valve (D) Existing hose that connects into the tube assembly venturi.
Illustration 2 g03876537
Tube assembly venturi configured with an air cleaner only. (A) Existing pre-cleaner (E) Existing hose that connects into the tube assembly venturi. (F) Existing tube assembly venturi
Disassemble the parts shown in Illustration 1 or Illustration 2 from the existing venturi. Inspect those parts for heat distortion. Retain the reusable parts for reassembly and replace any distorted parts.
Illustration 3 g03876480
The hose to the check valve/air cleaner has been removed in the previous step. (F) Tube assembly venturi (G) Clamp (H) Clamp (J) Bolt (K) Washer (L) Clamp consisting of two pieces (M) Diesel particulate filter group
Loosen clamp (G) and remove the exhaust pipe from tube assembly venturi (F) .
Remove two piece clamp (L) by removing one bolt (J) and one washer (K). Retain the two piece clamp (L) and hardware for reassembly.
Loosen clamp (H) and remove tube assembly venturi (F) from diesel particulate filter group (M) .
Reassemble the unit using new tube assembly venturi (1) and the retained hardware.