Clause 903a(iii) states: "Ensure that wear at any section on draw hook should not exceed 10 mm."

Clause 903b(i) states: "Destruction tube should be examined and coaches with collapsed destruction tube should be withdrawn from service at the first opportunity for sick line attention."

Clause 902b(v) states: "The pre-compression of rubber pack with parting plate will be 439 ± 2 mm."

Clause 902b(v) states: "Place the M39 nut over spindle and tighten the nut as to achieve a length of buffer of 635 ± 2 mm."

Clause 902b(v) states: "Measure the free height of a set of rubber buffer pad pack (consisting of 16 pads) to STR No.9501 (Rev.2) and add parting plates, as required, to achieve a free height of 484 ± 2 mm."

Clause 902b(iv) (Rubber buffer pads) states: "The pads should be checked every POH for perishing or permanent set to a length below 424 mm."

Clause 902b(iv) (Buffer plunger) states: "Circumferential welding of face plate with plunger is prohibited."

Clause 902b(iv) (Buffer plunger) states: "Place buffer spindle in the plunger and rivet cast steel face plate to Sk 94254 with 6 Nos.of 16 mm dia flat CSK rivets."

Table 9.10 specifies the wear limit for "Buffer plunger tube wall thickness 9 mm" as "4 mm" with suggested gauge of Micrometer.

Clause 902b(iv) (Buffer casing) states: "The elongated holes can be filled with weld metal and re drilled to 26 mm dia."

Table 9.9 specifies the wear limit for "Buffer casing body wall thickness 11.5 mm" as "5.5 mm in wall thickness" reduction.

Clause 902a(i) states: "In order to reduce the stress level on fixing bolts and prevent cracks in underframe headstock, the size of base of casing and location of fixing holes were increased."

Clause 902a(i) states: "To avoid welding of centre plug, an integral face plate is to be provided and the new buffer assembly should be to SK 98145."

Clause 902a(i) states: "During reclamation a wear plate with centre hole as per SK-81142 is fitted and plug is welded at centre to prevent rotation of buffer spindle."

Clause 902a(i) states: "Presently enhanced capacity (1030 kg.m) buffer conforming to specification No. IRS-M 10 are fitted in all BG mainline coaches."

Clause 902 (Re-fittment) states: "Ensure that the projection of the shoulder on the draw hook from the head stock is within 92 mm - 120 mm."

Clause 902 (Re-fittment) states: "Insert the split pins through the castle nuts and draw bars and open the split pins to 90 degrees."

Clause 902 (Re-fittment) states: "Tighten the castle nuts with 9.15 kg-m torque so as to achieve a pre-compression of 196 mm length of pack."

Clause 902 (Re-fittment) states: "The free height of rubber springs & parting plates should be 208 mm."

Clause 902 (Re-fittment) states: "Tighten the castle nuts with 9.15 kg-m torque so as to achieve a pre-compression of 196 mm length of pack."

Clause 902 (Re-fittment of Draw Gear on coach) states: "Lubricate the wearing surfaces in the screw couplings, draw hooks and draw bars with graphite grease or used Roller Bearing grease."

Clause 902 (Screw Coupling Maintenance) states: "Load test the screw coupling assembly under proof load of 60t (Stc.60-61) and 75t (IS:5517) respectively."

Table 9.7 specifies the wear limit for "78 mm 'U' gap" as "3 mm on each arm" with suggested no-go gauge of 77 mm go / 85 mm no go.

Table 9.7 specifies the wear limit for "42 mm dia stem" on bent link as 3 mm, with suggested no-go gauge of 39 mm snap.

Table 9.7 specifies the wear limit for "61 mm dia hole" on straight link as 2 mm, with suggested no-go gauge of 63 mm flat.

Clause 902 (Draw hook main) states: "The locating pins provided to restrict side-ways movement of the draw hook, should be replaced if deficient, cracked or worn."

Table 9.6 specifies the wear limit for "Wearing piece" as 6 mm, with suggested no-go gauge of 12 mm thick snap gauge.

Clause 902 (Draw gear pin) states: "Replace pins, found damaged, bent or worn more than 1 mm anywhere on the nominal diameter (31 mm)."

Clause 902 (Draft Yoke) states: "Ensure that the minimum distance between the inner edges of the 2 holes is 171 ± 0.5 mm."

Table 9.5 specifies the wear limit for "32mm dia hole" on bush as 1 mm, with suggested no-go gauge of 33 mm flat.

Table 9.5 specifies the wear limit for "45 mm dia hole" on draft yoke as 3 mm, with suggested no-go gauge of 48 mm flat.

Clause 902 (Rubber draft pads) states: "The pads should be checked every POH for... having got set to a length below 186 mm."

Clause 902 (Rubber draft pads) states: "The rubber pads should invariably be changed as a set every alternate POH."

Clause 902 (Draw Bar) states: "Test all draw bars by magna-glow equipment for surface cracks."

Clause 902 (Draw Bar) states: "Load test draw bar (Stc.60.61) at 39.5 t and those of IS 5517 Gr. 35Mn6Mo3 at 60t."

Table 9.3 specifies the wear limit for "155mm draft key slot" as 9 mm, with suggested no-go gauge of 164 mm snap.

Clause 902 (Draw Hook) states: "Load Test draw hooks (Stc.60-61) at 60t and those of IS:5517 Gr.35Mn6Mo3 at 75t respectively."

Table 9.2 specifies the wear limit for "62 mm dia pin hole" as 3 mm, with suggested no-go gauge of 65 mm flat.

Clause 902 (Draw Hook) specifically mentions: "The neck, its pin hole, and the slot are vulnerable locations."

Clause 902 (Dismantling) states: "Clean the components by any suitable method (Bosch tanks, hot water jets etc) before inspecting them."

Clause 902 (Pre-inspection) mentions: "Special attention should be paid to the condition of the yoke & draw gear pins for signs of creep motion, loose or bent/cracked pins."

Clause 901b states: "Load testing and crack detection should be carried out even on newly procured draw gear components before fitting them on the coaches."

Clause 901a(ii) states: "The proof load testing machines should have a capacity of applying loads upto a maximum of 100t - 150t."

Clause 901a(ii) specifies: "When the prescribed load is achieved, hold it for 2 minutes before gradually releasing the load."

Clause 901a(ii) cites both "poor weldability of these steels" and "inadequate infrastructure in Railway workshops for pre- & post-weld heat treatment" as reasons.

Clause 901a(ii) states: "For screw couplings and draw gear manufactured from steel to IS 5517 the practice of stress relieving in workshops should be dispensed with."

Clause 901a(ii) clearly states: "Hence these components should not be heated above 550°C."

Clause 901a(ii) states: "The components, except draft yoke, are specially heat treated to achieve the load bearing capacity."

Clause 901a(i) specifies that after upgrading to IS:5517-93 Grade 35Mn6Mo3, both components have proof load of 75t and breaking load of 130t.

Clause 901a(i) clearly states that earlier components were manufactured from Stc. 60.61 VSM10661 steel with proof load of 60t and breaking load of 108t/112t.