Maintenance Schedules and Periodicity of Electric Locomotives 

Conventional Locos

 

Coaching locos - WAM-4/WCAM-1, 2/WCG-2

Ref.  :    Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. I, dated 18.10.2001

             Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. II, dated 21.12.2001

             Rly. Bd. Letter No. 2006/Elect(TRS)/138/1 dated 13.11.2006

             Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. dated 26.12.16 

         

Maintenance Schedule Periodicity Duration

Trip inspection (TI)

After 3000 kms or one trip whichever is later.

2 hrs

IA

40 + 3 days

4 hrs

IB

80 + 3 days

6 hrs

IC

120 + 3 days

8 hrs

AOH

12 months + 15 days

6 working days

IOH 36 months + 1 month or 4 lakh kms (6 lakh for WAP-1 loco) whichever is earlier.

9 working days

POH

6 years + 3 months or 8 lakh kms (12 lakh for WAP-1 loco)  whichever is earlier.

24 working days

 

 

Coaching locos - WCAM-2P & 3 fitted with Roller bearing MSU

Ref.  :    RDSO Letter No. EL/3.6.1 dated 26.05.2015

                      

Maintenance Schedule Periodicity  

Trip inspection (TI)

After 3000 kms or one trip whichever is later.

 
IA

45 + 3 days

 
IB

90 + 3 days

 
IC

135 + 3 days

 
AOH

18 months + 15 days

 
IOH

48 months + 1 month or 4 lakh kms whichever is earlier.

 
POH

8 years + 3 months or 8 lakh kms  whichever is earlier.

 

 

Coaching locos - WAP-4, WAP-1 & WAG-5 TAOChi Passenger

Ref.  :    Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. I, dated 18.10.2001

              Rly. Bd. Letter No. 2006/Elect(TRS)/138/1 dated 13.11.2006

              Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. II, dated 21.12.2001

           Rly. Bd. Letter No. 2007/Elect(TRS)/138/1 Pt., dated 20.03.2012

             RDSO's Letter No. EL/3.6.1/1 dated 19.10.2016

             Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. dated 26.12.16 

 

Maintenance Schedule Periodicity Duration

Trip inspection (TI)

After 3000 kms or one trip whichever is later.

2 hrs

IA

60 days

4 hrs

IB

X

X

IC

120 days

8 hrs

AOH

18 months + 15 days (WAP-4 & WAG-5 TAOchi)*

12 months + 15 days (WAP-1)

6 working days

IOH

36 months + 1 month or 6 lakh for  whichever is earlier.

9 working days

POH

6 years + 3 months or 15 lakh kms  whichever is earlier.

24 working days

                                                                                                                    *On trial basis for 2 years

 

Freight locos - WAG-5 locos (Fitted with TAO TMs) 

Ref. : Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. I, dtd. 18.01.2001

 

Maintenance Schedule Periodicity Duration

Trip inspection (TI)

15 days

2 hrs

IA

45 + 3 days

4 hrs

IB

90 + 3 days

6 hrs

IC

135 + 3 days

8 hrs

AOH

18 months + 15 days

6 working days

IOH

54 months + 1 month or 6 lakh kms whichever is earlier.

9 working days

POH

9 years + 3 months or 12 lakh kms  whichever is earlier.

28 working days

 

Freight locos - WAG-5 TAOchi, WAG-5H, WAG-7, WCAG-1 & WCM-6 locos

Ref. : Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. I, dtd. 18.01.2001

         Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. III, dtd. 19.04.2011

        Rly. Bd. Letter No. 92/Elect(TRS)/138/5 Pt. III, dtd. 16.08.2012

         Rly. Bd. Letter No. 2009/Elect(TRS)/720/2 (Insp. Sch.) Pt., dtd. 19.12.2012

         RDSO's Letter No. EL/3.6.1/1 dtd. 31.08.2015

 

Maintenance Schedule Periodicity Duration

Trip inspection (TI)

20 days

2 hrs

IA

60 + 3 days *

4 hrs

IB

120 + 3 days *

6 hrs

IC

180 + 3 days *

8 hrs

TOH**

24 months + 15 days *

6 working days

IOH

72 months + 1 month or 6 lakh kms whichever is earlier.

9 working days

POH

10 years + 3 months or 12 lakh kms  whichever is earlier.

28 working days

**AOH is re-designated as TOH (Term overhaul)                                                      *On trial basis for 2 years

 

3-Phase (ABB) locomotives     

 

Coaching Locos - WAP5/WAP7 locos

Ref.  :    Rly. Bd. Letter No. 97/Elect(TRS)/440/18/44(3-Phase), dt. 23.02.07

              RDSO's Letter No. EL/3.6.1/1 dated 19.10.2016 

 

Maintenance Schedule

Periodicity

Duration

Trip inspection (TI)

3000 kms or one trip, whichever is later

2 hrs

IA

90 days

4 hrs

IB

180 days

6 hrs

IC

270 days

8 hrs

TOH**

18 months for WAP-5 locos

24 months for WAP-7 locos

6 working days

IOH

4.5 years + 6 months or 12 lakh kms. whichever is earlier for WAP-5 locos

4 years + 6 months or 12 lakh kms. whichever is earlier for WAP-7 locos

WAP-7 - 11 working days

WAP-5 - 20 working days

POH

9 years + 6 months or 24 lakh kms. whichever is earlier.

28 working days

**MOH is re-designated as TOH (Term overhaul)

 

Freight Locos   - WAG9/WAG9H locos

Ref.  :    Rly. Bd. Letter No. 97/Elect(TRS)/440/18/44(3-Phase), dt. 23.02.07

                RDSO's Letter No. EL/3.6.1/1 dated 19.10.2016

 

Maintenance Schedule

Periodicity

Duration

Trip inspection (TI)

45 days

4 hrs

IA

90 days

4 hrs

IB

180 days

6 hrs

IC

270 days

8 hrs

TOH**

24 months

6 working days /

8 working days for 2nd MOH

IOH

6 years + 6 months or 12 lakh kms. whichever is earlier.

11 working days

POH

12 years + 6 months or 24 lakh kms. whichever is earlier.

28 working days

  **MOH is re-designated as TOH (Term overhaul)

******