OPTION AR-LINKAGE 4213520 - Caterpillar

Motor Grader:
120G (S/N: 4HD1-UP; 1LK1-UP; 87V1-UP; 11W1-UP)
120H (S/N: CAF1-UP; 4MK1-UP; 5FM1-UP; 6NM1-UP; 6TM1-UP; 2AN1-UP; 6YN1-UP; 9FN1-UP; 9YR1-UP; ALZ1-UP; 1241-UP)
120M (S/N: B9N1-UP)
130G (S/N: 74V1-UP)
135H (S/N: CBC1-UP; BDJ1-UP; 3YK1-UP; 7MM1-UP; 8WN1-UP; AMX1-UP)
140G (S/N: 5MD1-UP; 72V1-UP; 13W1-UP)
140H (S/N: CCA1-UP; APM1-UP; 5HM1-UP; 8JM1-UP; 8KM1-UP; 9TN1-UP; 9ZN1-UP; 3AS1-UP)
140M (S/N: B9M1-UP)
143H (S/N: 1AL1-UP; APN1-UP)
160G (S/N: 4JD1-UP)
160H (S/N: ASD1-UP; 9EJ1-UP; 2FM1-UP; 3GM1-UP; 6WM1-UP; 9JM1-UP; CCP1-UP; 2HS1-UP)
160M (S/N: B9L1-UP)
163H (S/N: 5AK1-UP; ARL1-UP)
ReferenceSpecial Instructions, REHS4207, "Procedure to Install the New Pinion Shaft in the Circle Drive"Description of Change: A new pinion shaft is available for the circle drive on Motor Graders. The new shaft and new bolts will prevent the bolts that hold the clutch from failing and causing the clutch pack to slip under normal operation.Adaptable To: This change is adaptable to machines back to the beginning of production. Refer to Special Instructions, REHS4207, "Procedure to Install the New Pinion Shaft in the Circle Drive".