2001/12/24 The New Steering Control Valve Groups Improve Service Life {5051} Caterpillar


The New Steering Control Valve Groups Improve Service Life {5051}
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2001/12/24 [SEPD0610]
HYDRAULIC SYSTEM
VALVE GP-CONTROL
2001/12/24 The New Steering Control Valve Groups Improve Service Life {5051}
Excavator:
M312 (S/N: 6TL1-UP)
M315 (S/N: 7ML1-UP)
M318 (S/N: 6ES1-UP; 8AL1-UP; 8SS1-UP)
M320 (S/N: 6WL1-UP; 9PS1-UP)
Service Magazine SEPD0607, 03 December 2001, "The New Steering Control Valve Groups Improve Service Life". Disregard this article. See the article that follows.

Description of Change: New steering control valve groups improve service life. The former steering control valve groups have been changed. The seals of the new steering control valve groups increase service life.

Adaptable To: The replacements for the steering control valve groups are listed below.

  • The new 206-3402 Steering Control Valve Gp replaces the former 173-7387 Steering Control Valve Gp. Also, the new 206-3402 Steering Control Valve Gp replaces the former 111-1899 Steering Control Valve Gp .

  • The new 206-3404 Steering Control Valve Gp replaces the former 173-7387 Steering Control Valve Gp .

  • The new 206-3403 Steering Control Valve Gp replaces the former 173-7388 Steering Control Valve Gp .

  • The new 206-3405 Steering Control Valve Gp replaces the former 173-7388 Steering Control Valve Gp .

The new steering control valve groups are effective with the machines that are listed in Table 1.

The new steering control valve groups are adaptable with the machines that are listed in Table 2.

Table 1
Effectivity of the New Steering Control Valve Groups    
Model     Serial Number     Steering Control Valve Group    
M312     (S/N: 6TL1652-UP)     206-3402    
M315     (S/N: 7ML2643-UP)    
M318     (S/N: 8AL3153)
(S/N: 8AL3160)
(S/N: 8AL3199-UP)    
M318     (S/N: 6ES300-UP)     206-3404    
(S/N: 8SS612-UP)
M320     (S/N: 6WL867-UP)    
(S/N: 9PS434-UP)

Table 2
Adaptability of the New Steering Control Valve Groups    
Model     Serial Number     Part Number for the New Steering Control Valve Group     Part Number for the Former Steering Control Valve Group    
M312     (S/N: 6TL78-950)     206-3404 (1)     173-7387    
M315     (S/N: 7ML235-1646)    
M318     (S/N: 8AL536-2264)    
M312     (S/N: 6TL951-1651)     206-3402 (2) (3)    
M315     (S/N: 7ML1647-2642)    
M318     (S/N: 8AL2265-3198)    
M318     (S/N: 6ES216-242)     206-3405 (1)     173-7388    
M318     (S/N: 8SS450-469)    
M320     (S/N: 6WL86-468)    
M320     (S/N: 9PS237-286)    
M318     (S/N: 6ES243-299)     206-3403 (3)    
M318     (S/N: 8SS470-611)    
M320     (S/N: 6WL469-866)    
M320     (S/N: 9PS287-433)    
( 1 ) This group is used with former machines that were equipped with a fixed steering column.
( 2 ) The 8T-4137 Bolts (4) and the 4M-6921 Spring Washers (4) are not included in this group. These items must be ordered separately.
( 3 ) This group is used with current machines that are equipped with a tilt steering column.

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