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COMPARISON OF PANTOGRAPHS

TYPE OF PANTO AM-12 IR03H AM-92 BVGY

MAKE SIL & CCPL. CCPL SIL

BASE FRAME SQUARE TYPE. SQUARE TYPE. I TYPE.

UPPER FRAME Two Nos longitudinal tubesattached with centre swing link.

Upper frame tube pipe supportwith cross bar.

Upper frame assembly with supportingrod with rainbow joint.

PT S/MOTOR LOCATION Opposite side of raising spring A Opposite side of raising spring A Mounted rear side of centre swing link.

YORK ASSLY Adjusting stud having 6 No bearings. Adjusting stud having 6 No bearings. Cam sling assembly.

MECHANISM ASSLY Long. Long. Small.

CENTRE SWING LINK Aluminium make. M.S. make. Aluminium make.

OEM MODIFICATION NIL. NIL. NIL.

RDSO MODIFICATION Two Nos spring catchers on baseframe to prevent falling down of raising

spring as per RDSO modification

sheet No. RDSO/WAM4/ 155 dated31.07.1986, drawing No. SKEL 3896.

Two Nos spring catchers on base frameto prevent falling down of raising spring

as per RDSO modification sheet No.

RDSO/WAM4/ 155 dated 31.07.1986,drawing No. SKEL 3896.

NIL.

PHOTOGRAPHS

NOTE: Three Nos Brackets provided on Lower Arm to prevent falling down of Anti-balancing tube & raising spring vide drawing No. WR/BRCY/ EL/4-PT-017have been done in BRC Locos. Some Sheds provide single strip as below. However, three strips and their way of fixing provides better protection.

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INSTRUCTION FOR OPERATION OF REVERSER & CTF

REVERSER CTF

I. RECOGNITION : Reverser ( J-1 / J-2 )has two positions marked as F / R. CTF has two positions marked as TR / BR. Reverser ( J-1 / J-2 ) has a locking pin on one side. There is no locking pin on CTF.

II. WORKING :REVERSER ( J-1 / J-2 ) HANDLE

POSITION

CTF ( 1 / 2 / 3 ) HANDLE POSITION

WORKING CAB FORWARD REVERSE WORKING CAB TRACTION BRAKINGCAB-1 TOP BOTTOM ANY CAB TOP BOTTOMCAB-2 BOTTOM TOP

III. TROUBLE SHOOTING :SN DEFECT / ABNORMAL SIGN REMEDIAL ACTION1. On putting MPJ F / R LSB not extinguished. Operate MPJ handle F/R . Ensure EP COC open in HT compartments. Ensure proper setting of both

Reverser & CTFs. Operate them manually, Wedge Q-50.2. LSB glows continuously after DBR application. Ensure handles of all CTF in traction ( UP ). Operate 2-3 times manually. Try to resume traction if

succeed ignore LSB.3. Reverser power contact are flashed / welded. Isolate reverser by isolating corresponding RSI block & wedged Q-50 & refer TSD for further action.

IV. SPECIAL INSTRUCTIONS :1. If EP valve stuck up / not picking then operate EP valve manually 2-3 times, set J1, J2 & CTFs by handle. Do not open EP valve terminal wire connection

unless CCPT fuse melting trouble exists.2. In case of master MPJ handle, ensure twice that shaft of MPJ is in neutral ( Zero ) before manual operation of Reverser.3. In case of energizing a DEAD loco, ensure both reverser have been unlock and kept them normal. Plus ensure HT-1 2 EP COC are open.4. Do not wedged Q-50 without prior ensurance of proper setting of all reverser & CTFs.5. Also refer WAG5 TSD in detail.

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