Team-BHP - 124's DAWG | My 2021 Force Gurkha 4x4
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My Green Gurkha's thread

124's DAWG | My 2021 Force Gurkha 4x4-greengurka.jpeg

Requirement:
Having been introduced to old Mercs with W124, I always wanted old school function over form off-roader like the W461 G-Wagen, specifically 290GD seen below.


124's DAWG | My 2021 Force Gurkha 4x4-w461.jpg

124's DAWG | My 2021 Force Gurkha 4x4-w4612.jpg

https://www.youtube.com/watch?v=s4Shg_mIPow

See https://g-mercedes.com/inventory-for...JGALL_DIR=92b/

I did look for used old school G for sometime and came across Tempo 290 GTD video, I think its this one

https://www.youtube.com/watch?v=5C2iSJbDCKU

With information I could gather online, Gurkha had all the needed hardware on which I could build on. I had few concerns like safety, steering angle etc, interior seemed doable though. Came close to buying Gurkha Extreme, then "GURKHA 2020" happened:

124's DAWG | My 2021 Force Gurkha 4x4-gurkha2020.jpg

All my primary issues were addressed and it looked good too, incidentally it had same BHP as 290 GTD.

Booking:
After what seemed like long wait Force finally launched it, booked it on 30-Sep-2021, no test drive, actually I don't remember seeing any Gurkha in real life, as I said in other thread I was happy they made it . After transferring the advance online, I just sent below Whatsapp message to sales rep at Kshatriya Motors Mysuru.

Quote:

2021 Gurkha Booking Details
Color : Green
Acc : Roof Rail, Rear Ladder, Windscreen Bar
Test Drive:

Planned Changes:RenegadeŽ R/T+
124's DAWG | My 2021 Force Gurkha 4x4-rt.jpeg


Delivery:124's DAWG | My 2021 Force Gurkha 4x4-img_2520.jpeg

First Drive:Owner's Manual: Manual is detailed and complete with wiring diagram and all, just as I wanted.

First Causality:Bent guard:

124's DAWG | My 2021 Force Gurkha 4x4-bentguard.jpeg

Initial issues and fixes:Breather Junction: Breather from gearbox, diff's and transfer case are vented in engine bay at common location.

124's DAWG | My 2021 Force Gurkha 4x4-breatherjunction.jpeg

Leak Location: Oil would leak here and drop below on chassis wiring, damaging insulation.

124's DAWG | My 2021 Force Gurkha 4x4-breatherjunctionexit.jpeg

Likes
* Gurkha's 4x4 hardware, it's complete, any usability issue is one modification away.
* DIY friendly with access to parts catalog and service manual.
* Carries lot of MB design elements, which I am familiar with, already have list of swappable parts.
* Excellent support from Force sales and service team.

Dislikes
* Rear end design and lights could have been more boxy, looks bit Mahindra'ish
* Core chassis is well done, but all add-ons look aftermarket, deserve improvement.


Initial Impression:
* Have driven it in mix of slush, gravel and highway, it drives well even with stock steel wheel and Ceat tires.
* I feel Gurkha can be handful in tighter off-road sections due it's weight and size/height, this is more of over-lander than rock climber.
* Highway behavior is balanced, steady throttle in corners help, braking has to be pre-emptive.
* Engine revs to about 3.5K RPM, in 5th gear does about 142km/h on stand.
* 120 km/h is easily attainable, 135 km/h is the max I have seen slightly downward slope, 100-110 km/h is the best highway speed.
* 3rd gear should have been taller, in most overtakes I had to up-shift from 3rd to 4th in between.
* Front end articulation is huge, you can walk over large humps, but rear being fixy is bouncy.

Kenwood 5020S in Gurkha is spec'd OK and works fine, being touch only it has poor usability without steering control, at least a volume knob should have been there. Checked 5020S specification and found it had steering remote control, incidentally only model in its series.

Steering Remote Specification

124's DAWG | My 2021 Force Gurkha 4x4-5020s.jpg

Steering Remote wiring

124's DAWG | My 2021 Force Gurkha 4x4-steeringremote.jpeg


Plan: Install steering remote control, front/rear dashcam and reverse camera in one go.

Parts:Implementation: Planned to route the rear dash and reverse camera via roof, which led to removal of most of side and top interior trims. I mounted the camera's on rear door, I needed additional reverse camera wiring to route via rear door jamb and up the roof and down to the dash.

Steering Remote

124's DAWG | My 2021 Force Gurkha 4x4-img_2987.jpeg

Rear dashcam & Reverse Camera

124's DAWG | My 2021 Force Gurkha 4x4-img_2975.jpeg

124's DAWG | My 2021 Force Gurkha 4x4-img_2992.jpeg


Interior Notes:New Mic location & Crossbar

124's DAWG | My 2021 Force Gurkha 4x4-img_2567.jpeg

B Pillar: Trim should look like this without any gap between seat belt hanger and B pillar trim.
124's DAWG | My 2021 Force Gurkha 4x4-img_2991.jpeg


Reverse Camera

124's DAWG | My 2021 Force Gurkha 4x4-reversecam.jpeg


Dashcam:

https://youtu.be/r_gr8xB85mc

Sanded not finished: Someone had sanded the roof but not finished.

124's DAWG | My 2021 Force Gurkha 4x4-paintsand.jpeg

After Correction:


124's DAWG | My 2021 Force Gurkha 4x4-paintcorrect.jpeg

Did the first oil change after ~3200 kilometers. Its easier to change the filter after removing the wheel, took the opportunity investigate wheel fit and gaps.

R5 LE Specification: https://www.shell.in/business-custom...ct-leaflet.pdf

124's DAWG | My 2021 Force Gurkha 4x4-oilchange.jpeg

Its easier to change the filter after removing the wheel

124's DAWG | My 2021 Force Gurkha 4x4-oilchange2.jpeg

Took the opportunity investigate wheel fit and gaps.

124's DAWG | My 2021 Force Gurkha 4x4-wheelclearance.jpeg


Any guess on what wheel ?

Design:
Name:  GkurkaBRHub.jpeg
Views: 1916
Size:  62.4 KB

Flicked from https://www.teslamodel3wiki.com/tesl...e-differences/

Parts List:

1) B008263341701 x 2 - Front Wheel Hub
2) B008323560801 x 2 - Rear Wheel Hub
3) A000023020542 x 4 - Oil Seal
4) A000023020532 x 4 - Oil Seal
5) B008329810205 x 8 - T R Bearing
6) A000023526102 x 2 - Gasket Axle End
7) B008323570080 x 2 - Gasket
8) A000023020512 x 4 - Thrust Washer
9) A000023020493 x 4 - Collapsible Bush
10) B008081802410 x 1 - Oil Filter

In January second week I got a call from Force motors saying parts are available, there were few missing parts like Thrust Washer, Collapsible Bush and Gasket Axle End. There was no ETA on when missing parts would arrive, planned to re-use Thrust washer & Collapsible bush and use flange sealant instead Axle End gasket.

Front & Rear Hub: Hubs are same between BS4 & BS6, there is one minor difference with front hub.

124's DAWG | My 2021 Force Gurkha 4x4-img_2629.jpeg

Hub Cutting: Needed a good machine shop with precision lathe, this time instead of contacting tuner friends, spoke to Mannu who runs SunShine metal refinishing shop in Hebbal Mysuru. He suggested Mr Mukthar Khan and specifically said he has good HMT LB-17 lathe. Booked an appointment and visited the shop next day, it was pleasant surprise, located in isolated shed doing odd precision prototype job. Lathe was relative clean and spun like top, I was surprised to see owner had spent time scrapping.

Front Hub finished:
124's DAWG | My 2021 Force Gurkha 4x4-img_2638.jpeg


Cutting Rear Hub:
124's DAWG | My 2021 Force Gurkha 4x4-img_2637.jpeg

Hub face to wheel mount on rear hub is about 11.5 mm and 12 mm in front hub. So planned to keep it 12 mm on all four. While cutting though Mukthar Khan measured 12.2mm in one front hub and 12.4mm in another, so kept 12.4mm in front and 12mm at rear.

Final Product: Mukthar Khan is well experienced did excellent job with alignment and cut. Took about 2 hours to cut 4 hubs.

124's DAWG | My 2021 Force Gurkha 4x4-newfrontrear.jpg

Thread moved from the Assembly Line. Thanks for sharing!

Going to our homepage tomorrow :thumbs up

Wow, the 3rd Gurkha story in 2 months at t-bhp:loveit
This one too looks to become a page turner like the other two, am sure.
Congratulations on the ride! To me, this is the best shade the Gurkha comes in:Cheering:
Here is wishing you many lakh kilometers with the beast! Go ahead, unlock the adventure box!

It was time to take the plunge, was feeling lazy though

Jacked up and ready to go

124's DAWG | My 2021 Force Gurkha 4x4-jackup.jpeg

Rear brake assembly:

124's DAWG | My 2021 Force Gurkha 4x4-rearbrake.jpg

Removal: To remove rear hub brake lines needs to disconnected and parking cable detached.

124's DAWG | My 2021 Force Gurkha 4x4-parkbrake.jpeg

Rear Axle:

124's DAWG | My 2021 Force Gurkha 4x4-rightrearaxle.jpg

Dismantle Jig: To dismantle hub, you need jig as shown in top corner, I just used wheel itself as jig.

124's DAWG | My 2021 Force Gurkha 4x4-disassmblejig.jpeg

Lock Nut Tool: Had to make a tool to get the lock nut out.

124's DAWG | My 2021 Force Gurkha 4x4-tool.jpeg

Hub Split: Race & Grease was in good condition.

124's DAWG | My 2021 Force Gurkha 4x4-splithub.jpg

Hub Rust: Cleaned hub rust as preparation for paint protection.

124's DAWG | My 2021 Force Gurkha 4x4-rustclean.jpeg

Re-Finished: Painted and baked hubs before re-build.

124's DAWG | My 2021 Force Gurkha 4x4-paintedbaked.jpg

Hub End: Before and After

124's DAWG | My 2021 Force Gurkha 4x4-hubbeforeafter.jpg

Hub Parts: Spacers on top left corner is front hub only rest are same. Front and rear seals are different with different part number, front seals are better with double lip so used it for both front and rear.

124's DAWG | My 2021 Force Gurkha 4x4-hubparts.jpeg

Assembly Done: It's just putting all the bearings in same order as removed. The outer seal is on the axle so it's better to cover hub till assembly.

124's DAWG | My 2021 Force Gurkha 4x4-rearhubdone.jpg

Axle Flange: Cleaned and ready for assembly.

124's DAWG | My 2021 Force Gurkha 4x4-leftrightaxlecleaned.jpg

Hubs In:

124's DAWG | My 2021 Force Gurkha 4x4-rearhubfront.jpg

124's DAWG | My 2021 Force Gurkha 4x4-rearhubtop.jpg

Brake Drum Mount: Drum mounted to check alignment, if you are doing this it would be more accurate to do final cut with drum mounted in lathe.

124's DAWG | My 2021 Force Gurkha 4x4-drummount.jpg


Brake Drum Surface: Painted the drum wheel mount surface to remove old wheel indents.

124's DAWG | My 2021 Force Gurkha 4x4-drumpainted.jpeg

Rear Axle End Cap: Center bore of 65.1mm is pretty close you need to loose about 0.5mm on end cap, also change the stock bolts. I used button head screws to avoid using ring washer, had to grind it to match the clearance.

124's DAWG | My 2021 Force Gurkha 4x4-rearaxlecap.jpg

Rear All Done

124's DAWG | My 2021 Force Gurkha 4x4-rearhuballdone.jpeg

Test fit Rear Wheel Test fit to check the clearance.

124's DAWG | My 2021 Force Gurkha 4x4-img_2763.jpeg

Materials

Front end is lot more complex and hence more work compared to rear. The hub cap has grease for some reason looks like its common part pre-greased.

124's DAWG | My 2021 Force Gurkha 4x4-frondisstart.jpg

Hub Removed: With disc these weigh 29.5kg each.

124's DAWG | My 2021 Force Gurkha 4x4-beforefronthub.jpeg

Front Axle:

124's DAWG | My 2021 Force Gurkha 4x4-frontaxle.jpeg

Issue: One of the hub lock nut was too tight, I had re-do the finger of lock nut tool since old one got bent. After dismantling I found that seal wear marking on the thrust washer was wide. Looks like the hub ran loose for sometime and later it was re-tightened at some point and person went full monty :)

124's DAWG | My 2021 Force Gurkha 4x4-frontbearingwobble.jpeg

Spun: On this particular Hub, grease on outer end bearing was spent and race had scratches.

124's DAWG | My 2021 Force Gurkha 4x4-frontbearingburn.jpg


Disc Removed:

124's DAWG | My 2021 Force Gurkha 4x4-frontdisc.jpg

Disc Cleaned & Refinished:


124's DAWG | My 2021 Force Gurkha 4x4-rustcleaned.jpg

124's DAWG | My 2021 Force Gurkha 4x4-discfinshed.jpeg

Hub Assembly:

124's DAWG | My 2021 Force Gurkha 4x4-fronthubstart.jpeg

124's DAWG | My 2021 Force Gurkha 4x4-bearingpressed.jpg

Front Hub Done:

124's DAWG | My 2021 Force Gurkha 4x4-afterfront1.jpeg

124's DAWG | My 2021 Force Gurkha 4x4-afterfront2.jpeg

124's DAWG | My 2021 Force Gurkha 4x4-afterfront3.jpeg

Mounted:

124's DAWG | My 2021 Force Gurkha 4x4-fronttestmount.jpg


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