During D2 schedule for automatic fire detection and suppression system, check suppression system pressure in Nitrogen cylinder. If pressure is less than 150 kg/cm², inform to supplier/OEM for further guidance.

Hydraulic pressure testing of fire extinguishers is done at test pressure of 25 Kg/cm² maintained for 2.5 minutes at an interval of 3 years.

A banner flag or a board about 0.40 × 0.30 meters painted red and inscribed with the word "STOP" in white, erected about 1.20 meter above ground level, is used for RED PROTECTION.

Measurement of axle box temperature by non-contact type thermometer is to be taken. Axle box showing temperature above 80°C should be detached en-route from service.

For rolling in examination of passenger trains, the speed of the train shall not be more than 30 KMPH, and it should cover the entire length of train.

In case of heavy leakage or deflated air spring, the defective bogie is to be isolated and the coach may be permitted with speed restriction of 60 kmph up to terminal point for maintenance.

If only one broken axle box coil spring with no excessive tilt is detected en-route, the coach may be allowed to continue with speed not exceeding 90 KMPH in case of breakage of one outer coil of secondary spring.

If only one broken axle box coil spring with no excessive tilt is detected en-route, the coach may be allowed to continue with speed not exceeding 80 KMPH in case of breakage of one coil of primary spring.

For Power Car, primary springs inner (1277143) and outer (1277142) are painted yellow on the middle coil.

For identification, primary springs inner (1267412) and outer (1267411) are painted green on the middle coil.

During Shop Schedule III, dismount the CBC from coach, disassemble and overhaul as per RDSO's CMI No. RDSO/2006/CG/CMI-01.

During Shop Schedule III, all dampers should be replaced as part of the maintenance activities.

During Shop Schedule II, 100% replacement of Rexine and 100% replacement of carpets of Executive Chair car is carried out.

During Shop Schedule II, replace brake gear pins and other bogie pins/bushes as part of brake equipment overhaul.

During Shop Schedule II, replace all the rubber and rubber/metal bonded parts as per must change item list for AC & Non AC Coaches.

Small pitting holes up to a maximum depth of 04 mm may be permitted provided these are staggered, not continuous, and not concentrated on the bottom bend portion of the side frame.

The control arm mating surface with bearing should be coated with "Blasol - 135" solution to prevent corrosion.

For diameters between 230.5 mm and 230.312 mm, the control arm may be re-machined by providing a cut of 0.3 to 0.5 mm on the face of control arm. This machining operation should not be carried out more than once.

If the control arm bearing surface reaches a diameter of 230.5 mm (wear exceeding 0.5 mm), the control arm must be rejected.

During Shop Schedule I, perform wheel profiling and wheel balancing for speed >= 130 Kmph as per RCF specification no. MDTS – 168.

As per RDSO letter No. MC/CTRB/Genl. dated 19.01.2022, it should be ensured that residual magnetism in the bearing should not exceed 3 Gauss/0.3mT.

During Shop Schedule I, examine the brake discs to detect any thermal or fatigue cracks. Replace if necessary. Brake disc bolts should be checked for tightness.

During Schedule D3, renew protection treatment with TECTYL / CORTEC VC 1368 on the rubber joint on visible areas of control arm.

As per RDSO Letter No. MC/WA/Genl. dated 02.09.2019, Railways may use Eddy Current Array (ECA) Testing technique as an alternative method to DPT for testing of LHB wheels for detection of surface cracks during Schedule D3.

During Schedule D3, all carbon brushes on earthing devices should be replaced.

During Schedule D2, inspect the earthing equipment for wear of slip assembly / carbon bars.

During Schedule D2, if brake pads are worn to the specified limits, it is necessary to replace them.

During Schedule D2, BP & FP air filters and strainers should be cleaned.

During Schedule D2, lubricate all brake levers, pins & bushes and all moving parts using prescribed grease (Autol Top 2000 spray).

During Schedule D2, it should be verified that the clearance between each pad and disc surface is 1 to 1.5 mm.

During Schedule D1, bearing feeling is carried out for detection of hot bearing, and bearings are checked for grease leakage.

Air reservoirs should be drained during Schedule D1 maintenance to remove accumulated moisture and contaminants.

Air-pipes and connections should be checked for leakage by noise of escaping air and by applying soap solution on joints, and arrested if noticed.

During Schedule D1, lubricate the brake levers, pins & bushes and all moving parts with oil to ensure free movement of calipers, ensuring no lubricant drops on brake disc.

Shop Schedule III is conducted at 72 months or 24 lakhs kilometers, whichever is earlier.

Shop Schedule II is conducted at 36 months or 12 lakhs kilometers, whichever is earlier.

Shop Schedule I is conducted at 18 months + 30 days or 6 lakhs kilometers, whichever is earlier.

Schedule D3 is conducted half yearly with a tolerance of ±15 days as per the coaching depot schedule.

Schedule D2 is conducted monthly with a tolerance of ±3 days as per the coaching depot schedule.

Schedule D1 is conducted every trip or weekly as per the coaching depot schedule, with a frequency of "Every Trip/Weekly".